When I said some students were so lazy, I ___to you.
| A．don’t refer | B．wasn’t referring | C．didn’t refer | D．hasn’t referred |
Not the teacher but the students excited.
| A．is |
| B．has |
| C．are |
| D．have |
Mathematics the language of science.
| A．are |
| B．are going to be |
| C．is |
| D．is to be |
On the walltwo large portraits.
| A．hangs |
| B．hang |
| C．hanged |
| D．hanging |
Nobody to smoke in the cinema.
| A．allows |
| B．a]low |
| C．is allowed |
| D．are allowed |
The police the murderer everywhere when he suddenly appeared in a theatre.
| A．is searching for |
| B．were searching for |
| C．are searching for |
| D．were searching |