1 . Paul has always regretted ________harder at school when he was young.

A．not having studied

B．not being studied

C．not studying

D．not to study

2 . There is no point _____improved public transport unless we can pay for it.

A．advocating

B．advocated

C．to advocate

D．advocate

3 . Preparing high-quality roast duck is a long, complicated process of many steps, from selecting the duck at the beginning to ________ it to the diners at the end.

A．being served

B．be served

C．serve

D．serving

4 . If you have any comments for suggestions, please let us know; we always appreciate_____feedback from friends.

A．having been received

B．to receive

C．receiving

D．to have received

5 . When working on a tough project, you need to keep ________ the guidelines to ensure you’re always on the track.

A．preserving

B．reserving

C．observing

D．deserving

6 . Barely ________settled down in Beijing when he was tasked ________over the company in Shanghai, whose CEO was diagnosed with cancer two weeks ago.

A．he had ; to take	B．had he ; with taking
C．had he; to take	D．he had; with taking

7 . I recommended ________ an English-Chinese dictionary, ________ I thought would be of great help to his studies.

A．buying; that

B．to buy; that

C．buying; which

D．to buy; which

8 . The police accused him of setting fire to the building but he denied ______ in the area on the night of the fire.

A．to be

B．to have been

C．having been

D．be

9 . He had          life and enjoyed          the workings of objects and animals.

A．appetite for;exploring

B．an appetite for;exploring

C．appetite in;to explore

D．an appetite for;to explore

10 .          on my computer，I found an e­mail from my penfriend，         me to spend the summer holiday in his city.

A．On turning;invited

B．On turning;inviting

C．When having turned;to invite

D．After having turned;inviting