She had golden hair when she was a child, but_________ she got older and older, her hair went darker and darker.

A. while       B. when           C. after       D. as

_________ time and labor, cartoonists generally draw the hands of their characters with only 3 fingers and a thumb.

A. To save     B. Saved     C. Saving     D. Having saved

"Who Moved My Cheese?", ____________ is a best-selling book, is written by Spencer Johnson.

A. which      B. that       C. it            D. what

—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday?

—I ___________and failed to hear the phone.

A. might have slept               B. must be sleeping

C. might be sleeping              D. must have been sleeping

He is ill. He has kept_____.

     A. coughing all along                        B. to cough at night

     C. cough since yesterday                     D. being coughed day and night

This scientist is a man ______ praise.

     A. worth to          B. worthy to be       C. worthy of         D. worth

____ more attention, the trees could have grown better.

     A. Given             B. To give            C. Giving            D. Having given

Though he failed, he tried _______ it again and again.

     A. to do              B. doing             C. do                D. done.

To play fair is as important as ______.

    A. to play well        B. play well           C. we play well        D. playing well

---- Where did he go?                   ---- He went to another store ______.

            A. to buy pencils      B. for buying pencils  C. buy pencils         D. buying pencils