50.论语是我国先秦时期一部( )散文集，共二十篇。

158.“Dancing Beijing” is a symbol of trust， ()for the promise that we has made to the world .

157.The weather() terrible yesterday. In fact， it () awful for several days.

156.---How do you do， Mr. Smith? --- ().

155. I have worked here since I () from college.

154.Why not()?

153.Children should() from early age to do their part to save natural resources.

152.Turn() the TV a bit. The weather forecast hasn’t begun yet.

151. Could you tell me ()

150.Jenny is () university student， and she is () honest girl.

149.The spray is made () pure water， vitamins and mint.