1 . After completing and signing it, please return the form to us in the envelope           .

A．providing

B．having provided

C．provided

D．to provide

2 . I had my house___________ (decorate) imaginatively and attractively. (所给词的适当形式填空)

4 . Before ________ into the city, you are required to get your car________.

A．driving, washed	B．driving, wash
C．driven, washing	D．driven, to be washed

5 . ________ other workers, Jack will be selected as the most satisfying worker this year.

A．Comparing with

B．Compared at

C．Compare

D．Compared with

6 . When ________to compare the education system of China and Britain, the professor gave no answer.

A．ask

B．asking

C．asked

D．to ask

7 . He raised his voice to make himself___________.

A．understood

B．understand

C．to be understood

D．to understand

8 . In the laboratory Watson found Sherlock Holmes ______ at a desk with his attention ______ on some experimental equipment.

A．sitting; focusing

B．seating; focused

C．seated; focusing

D．seated; focused

9 . （2015·江苏）Much time ________sitting at a desk, office workers are generally troubled by health problems.

A．being spent	B．having spent
C．spent	D．spending

10 . ______ twice, the postman refused to deliver our letters unless we chained our dog.

A．Bitten

B．Having bitten

C．Bit

D．Had been bitten