20.When Calvin comes home tonight, his children ________.
(A)will be sleeping
(B)have gone to bed
(C)have been watching TV
(D)are doing their homework
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統計: A(70), B(46), C(16), D(19), E(0) #1908595
統計: A(70), B(46), C(16), D(19), E(0) #1908595