Elephants have their own way to tell the shape of an object and ________ it is rough or smooth.
| A．不填 | B．whether | C．how | D．Which |
_________basic first-aid techniques will help you respond quickly to emergencies.
| A．Known | B．Having known | C．Knowing | D．Being known |
The _______mother didn’t know what to do when hearing the __________news.
| A．puzzling; puzzling | B．puzzled; puzzled |
| C．puzzled; puzzling | D．puzzling; puzzled |
By _____ chance a friend of mine came across Jay Zhou in Taiwan, who has _____ gift for music.
| A．a, a | B．a,/ | C．the, a | D．/, a |
----Can you come to the party on Saturday, Peter?
---- Oh,__________ I’m already going out, I’m afraid.
| A．cheer up! | B．what a pity! | C．why not? | D．I’d rather not. |
My son has gone abroad．I’m looking forward to him ______．
| A．return | B．to return |
| C．returning | D．returned |