These changes may cost quite a lot, _____ they will save us money in the long run.
A. so B. and C. for D. but
The couple had quarreled all time before they their engagement
A. broke down B. broke through C. broke off D. broke out
I am sorry I can’t spare any paper for you, for, you see, I have _____ myself.
A. none B. on one C. neither D. nothing
Obama was elected ____ first black president of the United States four years ago and has been elected _____ president again for the next four years.
A. the; the B. the; X C. X; the D. a; a
Can you tell the _____ difference between the words “require” and “ request”? I sometimes get puzzled by their meanings.
A. dramatic B. regional C. apparent D. subtle
The old man sat in front of the television every evening, happy______ anything that happened to be on.
A. to watch B. watching C. watched D. to have watched
