--Shall we go to visit Uncle Lee this weekend?
--_________. I wonder whether I will be free that day.
A. It doesn’t matter B. It all depends
C. I’m afraid we should D. I don’t mind
No one is allowed ______ in the classroom.
A. smoking B. smoke C. smoked D. to smoke
The rice made _____ possible to produce one-third more of the crop in the same field.
A. that B. this C. one D. it
I regret ______ you that you will miss your flight if you don’t hurry up. You have only twenty minutes to go.
A. to tell B. telling C. having told D. to telling
. ______ hard. You are sure to succeed!
A. Working B. Work C. Worked D. To work
There was a time _____ hunger was a disturbing problem in this area.
A. how B. when C. that D. why
