—_______ John this week?
—Yes.
—Where _______ him?
—In the library.
| A．Did you see; did you see | B．Have you seen; did you see |
| C．Do you see; have you seen | D．Have you seen; have you seen |
What’s the name of the sport __ you try to get the other person down on the floor.
| A．in which | B．which | C．whom | D．in that |
___ is a good idea to keep quiet about the problem.
| A．That | B．It | C．There | D．What |
You’d better find an English pen friend ___ improve your writing.
| A．so that | B．in order that | C．to | D．for |
There are 2100 students __ all in our school.
| A．for | B．at | C．by | D．in |
You’d better __ electricity; it would be dangerous.
| A．look out | B．take care of | C．watch out for | D．care about |