- ——Why haven‘t you bought any meat？——I __________ to but I forgot about it.
- ——Why don‘t you go to medical! college and be a doctor‘？.
- I don’t understand ______ such a silly question in class yesterday.
- Could you tell me ______________ for class this morning?–I am sorry, Mrs. Lin. I got up so late that i couldn’t catch the first bus.
- Could you tell me ______ yesterday?–I’m sorry, boss, My car was broken on my way here.
- Could you tell me yesterday?—Because my bike was broken on my way here.
- I don’t know －Because he has to look after his mother.
- The light in his room is still on. Do you know _________?— To prepare for the coming exam, I think.
- The light in his office is still on. Do you know _______?—To prepare for the material(材料) the meeting will need tomorrow, I think.
- The teacher asked Tom _________.