答案A. need (实意) +n /to do,need (情态)+ do,当为被动语态时,还可need + doing. 本题考最后一种用法,选A。如有to be clean 则也为正确答案。
There is some difficulty in doing sth意为“做某事有些困难”。 There is much difficulty in doing sth意为“做某事许多困难”。 There’s a need for…意为“需要或有必要…”。 二. prefer句型 (1) prefer to do sth 例:I prefer to stay at home. (2) prefer do...
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