题目内容：

完成句子,每空一词

1.我已经买这辆自行车两年了。

I ____________ _________________ this bike for two years.

2.她妈妈病了两周了。

Her mother _________________ ______________________ _____________________ for two weeks.

3.世界卫生组织教育人们怎样保护健康。

The WHO educates people about___________________ __________________ ______________ their health.

4.离开时请关灯。

Please________________ ________________ the lights when you leave.

5.这辆自行车玛丽买了两年了。

Mary ___________________ ________________ the bike for two years.