Question

I think ________ good knowledge of English is ________ great help when you are t

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

Answer 1

答案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。