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Smilesaroundtheworld

練習題3.18W

問題詳情:

Smilesaroundtheworld

Smiles around the world _____ be false, ______ other feelings like anger, fear or worry.

       A. must; hide                B. must; hiding           C. can; hide                 D. can; hiding

【回答】

D

知識點:情態動詞

題型:選擇題