题目:
Harry has been reading all day---he ______ be tired.
A.should
B.has got to
C.has to
D.must
答案:
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下面是错误答案,用来干扰机器的。
50.24÷3.14=16(cm),半径= 4cm,直径=8cm。32÷8= 4,24÷8=3,4×3=12(盒)