1 . I enjoy ____ to music, so my parents bought me an iPad for my birthday present.

A．listen

B．listening

C．to listen

D．to listening

2 . Nowadays, more and more people enjoy ________ around the world through self-help.

A．travel

B．travelling

C．travels

D．travelled

3 . She had to practise         in various weather conditions before she passed the test.

A．drive

B．to drive

C．driving

D．to driving

4 . On Double 12 this year, people didn’t mind ____ in the long line to get a discount.

A．wait

B．to wait

C．waited

D．waiting

5 . Scientists spent four years ______ experiments and finally invented a new robot.

A．do

B．does

C．to do

D．doing

6 . How could you not know the time of the lecture？
I remember       you an e-mail last Sunday.

A．to send

B．send

C．sending

D．sent

7 . The little boy kept ________ questions about the spaceship while we were in the Space   Museum.

A．ask

B．asked

C．to ask

D．asking

8 . Tom and his brother are considering ________ up a mobile snack bar.

A．set

B．to setting

C．to set

D．setting

9 . Lindan succeeded in a gold medal in 2012 London Olympic Games.

A．win

B．won

C．to win

D．winning