—Sorry, I have to now. It’s time for class.
—OK. I’II call back later.
| A．break up | B．hang up | C．give up | D．hold up |
You may choose one from _________ was left.
| A．that | B．all | C．those which | D．what |
It isn't decided yet _______ we will attend the meeting.
| A．if | B．why | C．that | D．whether |
It takes time to build ______ when you are learning a difficult skill.
| A．confidence | B．strength | C．energy | D．belief |
Four-fifths of the crop ______.
| A．are ruined | B．was ruined | C．were ruined | D．have been ruined |
You must be careful when ___ on the highway.
| A．you driving | B．are driving | C．driving | D．you were driving |