20．Because of the heavy traffic，it was already time for lunch break　　　　 　she got to her office．w_w

A．since　　 B．that　　 C．when　　　 D．until w

[考点]从句(状语从句when)

　 [难度]易

[解析]when“当… 时候”。

19．If you have a job，　　　　 yourself to it and finally you’ll succeed．　

A．do devote　　　　 B．don't devote　　 C．devoting　　　　 D．not devoting

[考点]非谓语与谓语、简单句

　 [难度]难

[解析]考生必须能看出后半部分是祈使句时才可能选对。而且考生还应知道肯定句加助动词do/did/does表强调。

18．You’ve failed to do what you　　　　　　 to and I’m afraid the teacher will blame you．

A．will expect　　　 B．will be expected　　 C．expected　　　　 D．were expected

[考点]时态语态(过去时态被动)

　 [难度]中

[解析]根据语境可知应该用被动。而have failed提示the teacher expected you to do …。