179.It is necessary that he ____ the assignment without delay.

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

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

122.He asked me to lend him some money, which I agreed to do, _______that he paid me back the following week.

121._______you_______further problems with your printer, contact your dealer for advice.

120.The meeting was put off because we_______a meeting without John.

119.What's the chance of_______a general election this year?

118.That was not the first time he_______us. I think it's high time we_______strong actions against him.

117.Do you know Tim's brother? He is_______than Tim.

116.I know he failed his last test, but really he's_______stupid.

115.I went there in 1984, and that was the only occasion when I_______the journey in exactly two days.