用方框中所给单词的适当形式填空，每词仅用一次（每空一词）。

小题1:My son wants to go to see the          in the zoo. He thinks they are lovely.
小题2:Mr. Green ______ English in No. 1 Middle School when I was ten years old.
小题3:Do you know that Bill Gates donated（捐赠）____4____ of dollars in 2010?
小题4:If we work hard ,we will          at last.
小题5:He had to talk to          when there was nobody at home.