题目内容
Smiles around the world _____ be false, _______ other feelings like anger, fear or worry.
A.must; hideB.shall; hiding
C. may; hideD.can; hiding
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题目内容
Smiles around the world _____ be false, _______ other feelings like anger, fear or worry.
A.must; hideB.shall; hiding
C. may; hideD.can; hiding