1 . 学生们在做实验的时候，突然灯灭了。
The students________ the experiment________ the lights were out.

2 . Because of the rising energy prices, millions of households in the UK are ___________ (努力，挣扎) to make ends meet. (根据汉语提示单词拼写)

3 . —What       you           in the classroom at the moment?
—The coming charity show for Yingjiang, Yunnan.

A．are, talking about	B．did, talk about
C．have, talked about	D．do, talk about

4 . You forgot to go to the meeting? You _____ important things. It’s so_______.

A．had always forgotten; disappointing	B．are always forgetting, disappointing
C．always forget; disappointed	D．were always forgetting; disappointed

5 . Mr. Lin _____ when I go to see him on Sundays.

A．is always working	B．was always working
C．always worked	D．has always worked