39.We can＇t figure outquite a number of insects, birds, and animals are dying out.

106.She ismother.

105.To my , he has finished the tough job in such a difficult situation.

104.She tried to explain this program byof sign language.

103.Thebetween the rich and the poor has been widening.

102.Solar energy is a new kind of energythat we can use to replace the traditional energy.

101.My brother brought me a few books, butof them was of any use for my paper.

100.When you stay in a foreign country for some time, you will get used to the local people＇s oflife.

99.Mary found extremely hard to pass the driving test after the enforcement of the new trafficregulations.

98.Much to the students * , the examination was postponed to the next Friday.

97.Modem fanning methods may have an adverseon the environment.