His letter was so confusing that I could hardly make any ______ of it.
| A．explanation | B．meaning |
| C．sense | D．guess |
The manager believes prices will not rise by more than ________ four percent.
| A．any other |
| B．the other |
| C．another |
| D．other |
__________ many students have known about the news, you, as our monitor, had better announce it officially in front of all the students.
| A．Unless |
| B．Although |
| C．Once |
| D．Because |
__________ well prepared a gymnast is, he still needs a lot of luck in performing.
| A．Whatever |
| B．Although |
| C．No matter |
| D．However |
__________ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
| A．Although |
| B．As long as |
| C．If only |
| D．As soon as |
Mr. Black ________ English in a middle school ever since he came to China.
| A．have been teaching |
| B．has been teaching |
| C．had taught |
| D．taught |