1 . Do remember ______ the door when you leave.

A．lock

B．to lock

C．locking

D．locked

2 . Please trust me. I guarantee ______ your goods within a week.

A．delivering

B．to be delivered

C．being delivered

D．to deliver

3 . Shortly after, he managed ________ to his film career by directing, producing and even starring in films.

A．return

B．to return

C．having returned

D．returning

5 . Despite this, he wanted ______ life to the full.

A．living

B．to live

C．lived

D．lives

6 . We regret ______ you that your works are rejected.

A．having informed

B．informing

C．to inform

D．to have informed

7 . Can you give me some advice? I find it difficult ________ my workers to work more efficiently.

A．motivate

B．to motivate

C．motivating

D．motivated

8 . His heart sank the moment he read the message — We regret ________ you that you haven’t been selected for the team.

A．to inform

B．informing

C．having informed

D．inform

9 . Every year about 40000 people attempt________ Kilimanjaro, the highest mountain in Africa.

A．to be climbed

B．to climb

C．climbing

D．having climbed

10 . Don’t forget________   off the light before________ the house.

A．turning, leaving

B．turning, left

C．to turn, leave

D．to turn, leaving