17．—Is there any better way to help my son get rid of the habit of playing computer games?
—To tell you the truth, it’s very hard. But we_______on this problem to improve the situation.
| A．were working | B．had worked | C．are working | D．had been working |
Generally speaking, it is about ____ on the mountain than in the valley.
| A．three degrees colder | B．three degrees as cold |
| C．colder three degrees | D．as cold three degrees |
She bought the ring for ￥5000 three years ago, but now is it worth ____ the amount.
| A．double more than | B．more double than |
| C．more than double | D．double than more |
It’s dangerous to let the children who are ____ walk across the crowded street.
| A．too young to | B．so young | C．not old enough too | D．so young as to |
The Spring Festival is ___ us and we have a lot of things _____.
| A．to; to buy | B．for; to be bought | C．nearby; bought | D．upon; to buy |
. They stayed with me three weeks, _____ they drank all the wine I had.
| A．which | B．which time | C．during which time | D．during which |