．— I’d better__________ now．The water is boiling in the kitchen．
— Good-bye．
| A．ring off | B．ring up | C．ring in | D．ring back |
——Hey, you haven’t been acting like yourself. Everything OK?
—— .
| A．I’m fine, thanks | B．Sure, it is | C．That’s good | D．It’s OK |
_____ by the advances in technology, many farmers have set up wind farms on their land.
| A．Being encouraged | B．Encouraging |
| C．Encouraged | D．Having encouraged |
Don’t worry if you don’t understand everything, the teacher will ______ the main points at the end.
| A．recover | B．review | C．require | D．remember |
It is obvious to the students ______ they should get well prepared for their future.
| A．as | B．which | C．whether | D．that |
---- Sorry, I have to ______ now. It’s time for class.
---- OK, I’ll call back later.
| A．hang up | B．break up | C．give up | D．hold up |