Auxiliaries

Read the sentence to find out whether any grammatical or idiomatic errors in it. The error, if any, will be in one part of the sentence. The letter of that part is the answer. If there is 'No error', the answer is 'D' (ignore errors of punctuation, if any).

If instead of a divine power some other force has (A)/ appeared, it used to be explained in what this new force (B)/ consists, for the whole interest of history lies precisely in that force (C)/. No error (D)

Choose the correct auxiliary for past actions: "He ______ (finish) his homework yesterday." What auxiliary correctly conveys this tense?

Choose the auxiliary to show agreement with the subject: "She ______ (be) to the zoo." What auxiliary correctly fills in the blank to agree with the subject?

Complete the sentence using do, does, or did: "He ______ not want to go to the party." Which option correctly fills in the blank?

Select the auxiliary for perfect tenses: "He ______ (finish) his homework." What is the correct auxiliary to complete this sentence?

Choose the auxiliary to form negative sentences: "She is happy." Which option correctly transforms this sentence into its negative form?

Choose the correct auxiliary for past actions: "They ______ (finish) their homework before dinner." What is the correct auxiliary that conveys this past tense?

Fill in the blanks with appropriate auxiliaries: "I ______ (be) excited about the trip last week." Which auxiliary correctly completes this sentence?

Choose the auxiliary to show agreement with the subject: "He ______ (be) to the concert." Which auxiliary correctly fills in the blank to match the subject in number and person?

Complete the sentence using do, does, or did: "They ______ (not finish) their project." Which option correctly fills in the blank?

Choose the auxiliary to form negative sentences: "He is happy." What is the correct negative form of this sentence?