问题
选择题
_____ was it _____ prevented him from attending the meeting? [ ]
A. What; what
B. What; that
C. It; what
D. That; that
答案
答案:B
_____ was it _____ prevented him from attending the meeting? [ ]
A. What; what
B. What; that
C. It; what
D. That; that
答案:B