—Hi, Lucy, I’m wondering whether I can use your mobilephone for a while. —I hate to say, but ______.
The old professor has such a bad memory that he looks for the watch while he is ___.
---Will you go to the Great Wall with us? ---If John wants to go, ____.
The old man ___ all his money.
This is the museum ___ we visit yesterday.
The president of the university has been ___ for two years.