About the sentence:

“She had been working on the project before the manager arrived.”

Choose the alternative with the right tense–aspect combination used in the verb phrase “had been working”:

Consider the sentence:

“By the time she arrives tomorrow, they will have finished the report.”

Which option BEST explains the temporal relationship expressed by the verb forms?

Consider the following sentence:

“It was John who suggested changing the curriculum.”

Which option BEST explains the function of the cleft construction in terms of word order and focus?

In the sentence below, identify which option BEST explains the grammatical reason why the comparative structure is considered incorrect and should be rewritten:

‘This book is more preferable than the other.’