Mr. Wu often spends lots of time ______ difficult problems______ us.
A.to explain; for B.explaining; for C.to explain; to D.explaining; to
_____ good information! I have never heard _____ wonderful news.
A.What a, such a B.What, such C.How, so D.How, so a
So many people lived in the small room that there was ______for the desk.
A.no place left B.not place left C.no place leave D.not any place living
—Did your brother _______ the competition yesterday? —Yes, but he only finished _______.
A.take part; fifth B.join; five C.join in; five D.join; fifth
The physics teacher asked us to get _________ to him and watch _______.
A.close; close B.closely; close C.close; closely D.closely; closely
—How kind it was _____ you to look after the dog for me while I was away!
—You’re welcome. It’s necessary _____ us to help each other any time.
A.of; for B.of; of C.for; of D.for; for
