The teachers ______came for a visit are foreigners.
| A．who | B．whom | C．whose | D．which |
It is very important for us_____ English well.
| A．learn | B．to learn | C．learning | D．learned |
It was raining hard. Kate decided _____ at home.
| A．to stay | B．not to stay |
| C．to not stay | D．not staying |
Always doing the same thing is really very_____ .
| A．interesting | B．relaxing | C．boring | D．exciting |
- _____ do you go online, Mary?
- Twice a week.
| A．How long | B．How often | C．How many | D．How much |
I can't find my watch. But it must be _____ in this room.
| A．everywhere | B．nowhere |
| C．anywhere | D．somewhere |