1 . I can’t help ____ the room, for I am very busy now.

A．clean

B．cleaning

C．have clean

D．cleaned

2 . ________ stress effectively, you must be sure to do something that completely takes your mind off everything else.

A．Absorbing

B．Being absorbed

C．Having absorbed

D．To absorb

3 . Going to another country to study requires a big adjustment and it usually takes some time to ________.

A．fit in

B．calm down

C．keep up

D．get away

4 . ______ the project in time, the staff were working at weekends.

A．Competing

B．Having completed

C．To have completed

D．To complete

6 . We usually take turns ________ cleaning, and today it is my turn ________ it.

A．to do; doing

B．do; do

C．doing; to do

D．to do; to do

7 . ________ warm at night, I would fill the woodstove, then set my alarm clock for midnight so I could   refill it.

A．Staying	B．Stayed
C．To stay	D．Stay

8 . ______ for her college education, she spent two years working as a cleaner for a rich family in her neighborhood.

A．Paying

B．Paid

C．To pay

D．Being paid

9 . 1969. she became the head of the project in Beijing, and decided to review ancient Chinese medical texts__________(find) traditional botanical treatments for the disease.

A．finding

B．found

C．to find

D．founded

10 . __________his research paper, Smith experienced various hardships for nearly half a year.

A．Accomplishing

B．To accomplish

C．Accomplished

D．Having accomplished