So far we have done a lot to build a low—carbon economy, but it is ____ideal. We have to work still harder.
| A．far from | B．next to | C．out of | D．due to |
This is ______ my parents are worrying about.
| A．why | B．that | C．what | D．how |
Do you know where ______now?
| A．he lives | B．does he live |
| C．he lived | D．did he live |
Listen to the laughter, the girls _______themselves.
| A．may enjoying | B．can be enjoying |
| C．must have enjoyed | D．must be enjoying |
The weather turned out to be fine yesterday. You ________the trouble to carry your raincoat with you.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
Then you usually lie there just ______ the ceiling, thinking about everything that could go wrong.
| A．glancing at | B．watching at |
| C．glaring at | D．staring at |