30. This dictionary is of great use, which can help you_________many problems about words and idioms.
| A．keep up | B．clear up | C．look up | D．take up |
相关试题
Up to now, the program ________ thousands of
children who would otherwise have died.
| A．would save | B．saves |
| C．had saved | D．has saved |
The living room is clean and tidy, with a dining table alreadyfor a meal to be cooked.
| A． | laid | B． | laying | C． | to lay | D． | being laid |
The school rules state that no child shall be allowed out of the school during the day, accompanied by an adult.
| A． | once | B． | when | C． | if | D． | unless |
Samsome knowledge of the computer just by watching others working on it.
| A． | brought up | B． | looked up | C． | picked up | D． | set up |
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