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
His _____ expression suggests that the news he read just now must be _____.
A. excited; exciting B. excited; excited
C. exciting; exciting D. exciting; excited
It is _____ that Professor Smith will give us a lecture tomorrow.
A. possibly B. probably C. likely D. maybe
_______ his research, man can set foot on the moon now.
A. Because B. Thanks to C. So as to D. In addition to
