If _____ carefully, the experiment will be successful.
| A．do | B．does | C．done | D．doing |
The general said to the men, “Don’t stop practicing.
The general _______ the man ________.
| A．ordered; not to stop | B．ordered; don’t stop |
| C．said to; not to stop | D．requested; to not stop |
The place was flooded ________ it had been raining for several weeks.
| A．because | B．because of | C．ever since | D．as a result of |
In China, those who want to enter universities have to _______ the entrance exams in June.
| A．check through | B．work through | C．look through | D．go through |
The teacher told us that light _______ faster than sound.
| A．traveled | B．had traveled | C．is traveling | D．travels |
It was not until she got home ____ Jennifer realized she had lost her keys.
| A．when | B．that | C．where | D．before |