C選項(xiàng)應(yīng)該是正確的
doing more exercise 是動(dòng)名詞,作為后面一句的主語
helpful是形容詞,接在Be 動(dòng)詞之后.
If you want to be healthy,（）is（）.
If you want to be healthy,（）is（）.
A.do more exercise；helping
B.do more exercise；helpful
C.doing more exercise；helpful
D.doing more exercise；helping
A.do more exercise；helping
B.do more exercise；helpful
C.doing more exercise；helpful
D.doing more exercise；helping
英語人氣：500 ℃時(shí)間：2020-04-07 06:34:09
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