1 . At this point, it is not clear why dogs seem to ________ (equip) with the ability to recognize different facial expressions in humans. (所给词的适当形式填空)

2 . The two experiments ________ (conduct) next week will prove Professor Li’s assumption. (所给词的适当形式填空)

4 . —What do you think of his talk on Information Technology?
—Oh, excellent. It is worthy ______.

A．listening to	B．being listened to
C．listening	D．to be listened to

5 . She has broken her leg, but it remains ________ (see) how badly.（所给词的适当形式填空）

6 . Any tickets __________ will be on sale at the gateway.

A．remained to sell	B．remaining to sell
C．remained to be sold	D．remaining to be sold

7 . As a junior assistant, Jack was lucky to ______(choose) for promotion. （所给词的适当形式填空）

8 . Michelle Wu is the first woman and the first person of color________mayor in Boston.

A．to elect

B．electing

C．to be elected

D．having been elected

9 . When________ why he was sent there, he said he was sent there ________ for a space flight.

A．asking, being trained

B．asked, to be trained

C．to ask, trained

D．asked, training

10 . The news reporters hurried to the airport, only ______(tell) the film stars had left. (所给词的适当形式填空)