题目内容
I think ________ good knowledge of English is ________ great help when you are traveling around the world.
| A.不填;a | B.a; a | C.a; the | D.a; 不填 |
B
a knowledge of…“知道/了解….知识、对…熟悉。”如:She has a good knowledge of London. 她对伦敦的情形很熟悉。
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