問題詳情
( )2.Mrs. Wang was busy _________ the floor when the telephone rang.
(A) mopping
(B) to mop
(C) mopped
(D) mop
參考答案
答案:A
難度:簡單0.763158
統計:A(29),B(4),C(2),D(1),E(0)
用户評論
【用戶】LeBron James
【年級】高三下
【評論內容】busy後應加V-ing事實上省略了on,busy (on) V-ing,介係詞(on)後應加V-ing,所以選mopping