171.Nancy's gone to work but her car's still there. She ____ by bus.

132.Susan is very hardworking, but her pay is not________ for her work.

131.I am surprised________ this city is a dull place to live in.

130.Loudspeakers were fixed in the hall so that everyone________ an opportunity to hear the speech.

129.The student said there were a few points in the essay he ________ impossible to comprehend.

128.It’s high time we ________ cutting down the rainforests.

127.The party, _______I was the guest of honour, was extremely enjoyable.

126.If only I ______ play the guitar as well as you!

125._______dull he may be, he is certainly a very successful top executive.

124.-- Why are you staring?
-- I've never seen_______tree before.

123.Children who stay away from school do_______for different reasons.