你不知道对方具体说的是哪个,你会说:A.Which one? B.Who’s he ? C.Who’s she?
What are you going to do this afternoon?. A.I’m going to buy a book. B.I go to school by bike. C.I am a student.
Whose sweaters are these ? _______, I think .
The students are playing __________.
Daming and Simon ____ to a baseball game in America.
He _____ little about the film until he _____ it yesterday evening .