完成句子和句型转换（20分，共10小题，每小题2分）
你看完这本书后，最好马上还给我。
When you                the book, you’d better return it to me at once.
看起来我们班将赢得这场篮球赛。
               that our class will win the basketball game.
他三十几岁时成了一名老板。
He became a boss                   thirties.
他们是中国的骄傲。
They are the                    China.
这音乐听起来像鸟儿在歌唱。
The music                     the singsing of  birds.
The film began five minutes ago.(改为同义句)
The film has                      for five minutes.
“Are there homeless people in your city?” I asked Wang Tao.(改为同义句)
I asked Wang Tao _____ there _____ homeless people in his city.
He’s never been abroad.（改为反意疑问句）
He’s never been abroad,  _____  _____  ?
You mustn’t play football in the street.(改为祈使句)
_____  _____ football in the stree
He has taught in this school since he was twenty.（对划线部分提问）
_____  _____   has he taught in this school?