問題詳情

【題組】4. Since everything seems so familiar to him, Ben thinks he ______ to this place before.
(A) must have been
(B) must been
(C) must be
(D) must have be

參考答案

答案：A[無官方正解]
難度：簡單0.8
統計：A(4),B(0),C(0),D(1),E(0)