At present, English is the main subject _____ here.
| A．to be taught | B．being taught | C．teaching | D．to be teaching |
Which of the following is right?
| A．She said that I was here a few weeks ago. |
| B．She said she was there a few weeks ago. |
| C．She said that I have been there a few weeks ago. |
| D．She said she had been there a few weeks before. |
We should ______ the achievements and correct the mistakes.
| A．add in | B．add to | C．add up | D．add up to |
You will be successful in the interview ______ you have confidence.
| A．before | B．once | C．until | D．though |
The factory was built in a secret place, around ____ high mountains .
| A．which was | B．it was |
| C．which were | D．them were |
The question is ____ of great importance.
| A．that | B．it | C．one | D．what |