The policemen had no ______ in finding the knife that the murderer had thrown.
A. difficulty B. troubles C. problems D. question
An athlete can’t play balls well without severe ______.
A. exercise B. teach C. education D. training
I ______ the time ______ so quickly.
A. didn’t realize; had passed B. don’t realize; passed
C. haven’t realized; passed D. hadn’t realized; had passed
______ terrible life the people in the mountains lived at that time！
A. What B. What a C. How D. How a
Our teacher lives in a poorly decorated apartment, ______ the south.
A. that window opens B. the window of which opens to
C. whose window open to D. the window of it opens to
I was about to leave my house______ the telephone rang.
A. while B. as C. when D. and
