With the development of society(社会)， most of the old customs here have _______ already.
| A．died down | B．died off | C．died out | D．died away |
--- I recommend you first give up smoking, and then try to find a job so that you’ll start a new life.
--- _______.
| A．Not in the least | B．Easier said than done |
| C．It’s up to you | D．That all depends |
The conservation area is very important for preserving many animals and plants, which would ______ run the risk of becoming extinct.
| A．otherwise | B．therefore | C．though | D．instead |
______ we think of Ben, we have to admit that he is a highly competent man.
| A．However | B．Whether | C．Whichever | D．Whatever |
Lin Tao has returned from the UK recently. He ______ at Cambridge for four years, during which we ______ with each other on the Internet.
| A．has studied; has communicated | B．had studied; communicated |
| C．studied; had communicated | D．studied; communicated |
Generally my father is a mild man, but when he gets angry, he ______ be fierce.
| A．can | B．should | C．must | D．shall |