Robots _______ do housework instead of people in the future.
| A．will be able to | B．will can |
| C．could | D．were able to |
Your shoes are too dirty. You’d better________.
| A．put on them | B．put them on |
| C．take off them | D．take them off |
Could we see each other at 9 o’clock tomorrow morning?
----Sorry,let’s make it_______time.
| A．other’s | B．the other | C．another | D．other |
I still remember the college and teachers_____I visited in London years ago.
| A．what | B．who | C．that | D．which |
As we all know, it’s not polite to keep others______for a long time.
| A．wait | B．waited | C．to wait | D．waiting |
_______is a pity that he can’t come to my birthday party.
| A．This | B．It | C．That | D．He |