I can’t thank you too much for your kindness because without your help I        have won the first prize in the speech contest.
#4559
A
can’t
B
shouldn’t
C
might not
D
couldn’t
推荐题目
.If _____,the experiment will be successful.
#4718
A
carefully doing
B
it done carefully
C
carefully done
D
doing carefully
.The teaching building is _________ by many trees, some ______ over 30 metres.
#4739
A
surrounded, measuring
B
surrounded, measured
C
surrounding, measured
D
surrounded, measure