問題詳情
10. Anna: Where is Elsa? Must Elsa go to school on Sundays?Olaf: No, she _________. But she ________ go there last Sunday, because there was a book fair.
(A) mustn’t ; must
(B) doesn’t have to; had to
(C) has not to; must
(D) mustn’t; didn’t
參考答案
答案：B
難度：適中0.666667
統計：A(0),B(2),C(0),D(1),E(0)