15．– How cold it is! I wonder how grass survive under such heavy snow．
--Don’t worry．There is a lot of air in loose snow which _______．
| A．keeps out the cold | B．keeps the cold away |
| C．keep off the cold | D．keep the cold up |
You can depend on _______ that the school will ______ immediately to the students’ request that they should have more time to relax.
| A．this; answer | B．it; refer | C．/; follow | D．it; respond |
—What is upsetting you, dear?
—________ it is necessary for us to move our home to the city.
| A．Whether | B．How |
| C．That | D．Why |
— Don’t you think the new job is a real challenge for Jack?
—Well, ______ difficulties he meets, I believe he will never lose heart.
| A．whenever | B．however |
| C．whichever | D．whatever |
In accordance to the latest news report, two hundred people died in the accident, _______, which made the parentscry their heart out.
| A．many of them children |
| B．many of them were children |
| C．and many of them children |
| D．many of which were children |
The actor’s absurd behavior put an end to the last traces of ______ his fans had for him.
| A．appreciation | B．motivation |
| C．affection | D．expectation |