This sentence contains an error in verb tense in the phrase "had ran out of." "Had" is a past tense helping verb, so the verb that follows it needs to be an infinitive. For example, one wouldn't say "He thought I didn't go to the concert, but I did went." You would say, "He thought I didn't go to the concert, but I did go." The corrected version of the given sentence is, "Ralph was having quite a hard time at lunch that day due to the fact that the cafeteria was serving chicken noodle soup and had run out of spoons."

This sentence has an issue of verb tense agreement. Because the given verbs are all in past tense—"knew," "appreciated," and "insisted"—the verb "misses" also needs to also be in the past tense. So, the corrected sentence reads, "Sharleen, who knew and appreciated how much work her mother put into preparing supper each night, often missed dinners with friends because she insisted on eating at home with her family."

"Was realizing" is grammatically incorrect and awkward. "Was realizing" implies a gradual process of realizing, when this is not the case; we can especially tell that this is true because of the sentence's use of "suddenly," which suggests a definite, one-time action in the past, not something that happened over time. So, to correct the sentence's error, the past progressive verb "was realizing" should be changed to the simple past tense verb "realized."

The verb "has been spending" does not work with the timeline of the sentence because Mrs. Reynolds is no longer in France. The verb should be a past participle instead. Changing "has been spending" to "had been spending" corrects the sentence's error. The corrected sentence reads, "Prior to accepting the post of head developer, Mrs. Reynolds had been spending time in France."

The first part of the sentence is in the past tense ("carried"), but the second is in the present ("goes"). These should be kept consistent. Changing "goes" to "went" corrects the sentence's error. The corrected sentence reads, "Margaret carried her dog, which was often clad in a pink and white argyle sweater, everywhere she went."

The verb "checked" is written in the simple past tense, and the following phrase is not coordinated correctly with the rest of the sentence. This can be fixed by turning it into a gerund: "The man peered around the corner, checking to see if the coast was clear."

This sentence switches tense from past ("as he resigned") to present ("thinks") in the middle of the sentence. In the logical timeline of events, these should both be in the past: "As he resigned himself to eating instant noodles for the rest of the month, Alex thought longingly of prime rib."

This sentence uses inconsistent verb tenses. It starts out in the past ("did not understand") and switches to the present ("is relevant"). Changing "is" to "was" corrects the sentence's error. The corrected sentence reads, "Jose did not understand how a lecture on sea turtles was relevant to a course on Middle-Eastern politics."

The second phrase of this sentence is needlessly in the progressive tense. It sounds clearer and more concise to put this in the simple past: "Testing the new model rocket would not be possible since it was a rainy day."

This sentence uses the wrong form of the verb “to be.” Since "being" follows another verb, "raising," it needs to be in the infintive form, "to be." The corrected sentence reads: "Despite his initial skepticism, Rory found the conference on urban chicken raising to be fascinating, informative, and inspirational."