45. our earth, or else it will be no longer fit for us to live on.
A.Protected B.To protect C.Protecting D.protect
44. is smoking allowed here in the lecture hall.
A.At no time B.In no time C.At one time D.At a time
43.The news has spread all over the country the spaceship succeeded in returning.
A.that B.which C.whether D.what
42.-How did you enjoy the performance last night?
- ! My favorite singer lost his voice and didn’t even appear.
A.What a failure B.What a disappointment
C.How awful D.What dissatisfactory
41.You don’t look very . I think you should go home now and take a good rest.
A.good B.well C.strong D.healthy
40.We have to the wheat as soon as possible because a storm is on the way.
A.get away B.get across C.get through D.get in
39.To keep healthy, Professor Johnson cycling as a regular form of exercise after he retired.
A.took up B.caught on C.carried out D.made for
38.Tom was gentle and he often talked with others a low voice but this time he shouted suddenly the top of his voice.
A.in, at B.at, in C.at, with D.in, with
37. you don’t like him is none of my business.
A.What B.Who C.That D.Whether
36. in a dark room, the little girl was so frightened as to cry loudly.
A.Leaving lonely B.Left alone C.Being left alone D.To be left lonely