23. Your room is terribly dirty; you get it cleaned in two hours or Mum will be angry. A.

问题补充：

23. Your room is terribly dirty; you get it cleaned in two hours, or Mum will be angry.

A. can

B. might

C. shall

D. may

答案：

A. can

B. might

(答案→)C. shall

D. may

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