When first to the market, these products enjoy great success.
A. introducing B. introduced C. introduce D. being introduced
What ____ it is to travel in ____space!
A. a fun; the B. fun; /
C. the fun; a D. a fun ; /
I was not _______ tired, though I walked more than five miles.
A. a little B. a bit of
C. a bit D. a little of
What difficulty _____you have ______the problem?
A. you think; solving B. do you think; to solve
C. do you think; solving D. you think; to solve
The teacher required that all the papers _____ before 10 o’clock.
A. were handed in B. would be handed in
C. be handed in D. shall be handed in
Mr. Bally approved ______ the conference.
A. me to attend B. for my attending
C. of me to attend D. of my attending
