九、 完成句子(5小題, 每小題1分, 計5分):根據(jù)漢語提示,將英語句子補充完整。
76.這張桌子太重我搬不動。
The desk is _________ _________ for me _________ _________ .
77.他們昨天在晚會上玩得很開心。
They _________ _________ _________ _________ at the party yesterday.
78.莫扎特4歲時開始寫曲子。
Mozart started _________ _________ when he was four years old.
79.當我出去的時候我看見他們在踢足球。
I _________ _________ _________ football when I went out.
80.The boy began to go to school _________ _________ _________ _________ .(在.他7歲時)