33.Don’t blame Harry. _______ was I who opened the letter.
A.This B.That C.There D.It
32.-Have you got permission __________ here?
-Yes.
A.to stay B.staying C.having stayed D.to be staying.
31.-Where are the signs you mentioned?
-They’re easy to find, if you know ______________.
A.whether to look B.what to look
C.who to look D.where to look
30.-Excuse me, did you notice anyone ___________ out?
-I’m afraid not.
A.going B.is going C.go D.would go
29.-Have you called 119?
-As soon as I saw the smoke, I called the firemen, but they _________ yet.
A.didn’t arrive B.hadn’t arrived C.haven’t arrived D.wouldn’t arrive
28.___________ a plane flew by, but mostly the sky remained clear.
A.In time B.On time
C.From time to time D.At the same time
27.Many teachers believe that students ___________ to experiment with new ideas.
A.should encourage B.should be encouraged
C.might encourage D.might have encouraged
26.The treatment will continue until the patient reaches the point _________ he can walk correctly and safely.
A.which B.where C.when D.that
25.The vase had been put on top of the cupboard _________ it wouldn’t get broken.
A.in case of B.as if C.so D.when
24.-Hurry up! You will be late!
-I hope they haven’t gone without __________.
A.I B.me C.myself D.mine
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