2．Ever since the financial crisis ________，many workers ________ from their jobs.

A．broke out；are laid off　　　　　　　　　　　　　　　 B．broke out；have been laid off

C．has broken out；were laid off　　　　　　　　　　　 D．broke out；had been laid off

1．It ________ quite correct that happiness comes from thinking about things in a positive way.

A．has turned out　　　　　　　　　　　　　　　　　　　　　　 B．has been turned out

C．in turning out　　　　　　　　　　　　　　　　　　　　　　 D．is turned out

20．There were two boys in the lab，________ did the experiment successfully.

A．the clever of whom　　　　　　　　　　　　　　　 B．the cleverer of whom

C．the clever of them　　　　　　　　　　　　　　　　 D．the cleverer of them

19．The media can often help solve problems and draw attention ________ situations ________ help is needed.

A．in；that　 　　　　　　　 B．to；which　　　　　　　 C．in；where　 　　　　　　　　　 D．to；where

18．-What should we pay more attention to if we go north in winter, Mum?

-Nothing much. Take warm clothes ________ the weather is cold.

A．as long as　 　　 B．now that　　　　　　　　 C．if　 　　　　　　　　　　　　　　　 D．in case

17．Our teacher is always busy preparing lessons until 11 o’clock at night，________ we students have gone to sleep.

A．that time　 　　　 B．by which time　　　　 C．by that time 　　　　　　　　　 D．which time

16．The news ________ is spreading around the airport is ________ a heavy storm is coming.

A．what；/　 　　　　　　　 B．that；that　　　　　　　 C．/；that　 　　　　　　　　 　D．that；which

15．Children’s brains can’t develop properly________ they lack protein(蛋白质)．

A．when　 　　　　　 B．since　　　　　　　　　　　 C．because　 　　　　　D．unless

14．Elbert Einstein, for ________ life had once been very hard, was successful later in science.

A．whom　 　　　　　 B．whose　 　　　　　　　　 C．which　 　　　　　　　　 　D．his