单项选择 较易0.85 引用2 组卷82
Jack ______ in the lab when the power cut ______.
| A．was working; occurred | B．worked; occurred |
| C．works; occurs | D．worked; was occurring |
21-22高二下·广东深圳·期中
类题推荐
It was the first time that he__________the New Coastal Area of Tianjin and was so impressed by its fast development.
| A．have visited | B．visited | C．had visited | D．would visit |
It's believed that ________ you work, __________progress you will make.
| A．the harder; the better |
| B．the more harder; the better |
| C．more hard; more better |
| D．the more hard; the better |
______ a clear head when in danger and you’ll protect yourself from serious harm.
| A．To keep | B．If you keep |
| C．Keeping | D．Keep |
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