. If it ______ for the fence, he ______ into the river. A. were not; fallen B. had not been; could have fallen C were not; could fall D. had not been; could fall
The villagers planted many trees in and around the village, which, _____, provide them with a beautiful scenery and much fresher air.
Out ______ when the bell rang.
When he was a child, he ______ watch TV whenever he wanted to.
Professor John will give us a lecture on how to learn English, but when and where _____ yet.
Having taken our seats, _______.