Question

【题目】—I saw Jim ______ into that new building just now.
—Oh, it's our new library. It ______ to the public for a week.
A.walk; has opened
B.walk; has been open
C.walking; has opened
D.walking; has been open

Answer 1

【答案】B
【解析】句意“我刚才看见吉姆进了那个新建筑里-噢，这是图书馆，它已经向公众开放一个星期了”。根据第二句，图书馆和开放为被动关系，故用have been opened。第一空指看见走进图书馆的全过程，用see sb do，故选B。