Some policemen should be sent to _______ them _______ the animals.
A. prevent; to kill B. stop; killing
C. keep; to kill D. keep; killing
After going into the concert hall, Tom _________ a friend and went over to greet her.
A. searched B. stared C. spotted D. admired
—What do you think of the play?
—Terrible! I’ve never seen _________ one.
A. a worse B. a bad C. a better D. the worst
Between 4.5 and 3.8 billion years ago, the earth became so ______ that it was not clear whether the shape would last or not.
A. genuine B. slight C. solid D. violent
_______ Japan’s nuclear crisis (核危机) will be solved in 2011 is not known yet.
A. That B. If C. Whether D. What
Little Tommy was not willing to tell the teacher _______ he had done before.
A. which B. how C. where D. what
