问题
The Shanghai Expo has had a major impactupon China. It is the first World Expo _________ in a developing country in theevent’s 159-year history.
A:having been held
B:to hold
C:being held
D:to be held
B:to hold
C:being held
D:to be held
正确答案是：
同类题型
You should exercise every day.—__________.
It is out of question that you ____ Chief Engineer of the railway when Mr. Bell leaves. [ ]
The boy ____ off the bike and hurt his leg yesterday.
His foot was hurt and he had to give up ________soccer.
________ my father _______ my mother believes what star signs say, but I do.