—I'm sorry, Mrs Smith. I've broken your glasses.
—It doesn't matter, Marks, but you________careful.
A.must be |
B.should be |
C.must have been |
D.should have been |
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—I'm sorry, Mrs Smith. I've broken your glasses.
—It doesn't matter, Marks, but you________careful.
A.must be |
B.should be |
C.must have been |
D.should have been |