问题
I regret ______ that I’m too busy ______ inthe talk.
A:to say, to participate
B:saying, participating
C:to say, participating
D:saying, to participate
B:saying, participating
C:to say, participating
D:saying, to participate
正确答案是：
同类题型
You won the first prize in the Physics competition.— . I made several terrible mistakes.
He ____ the explosion, but no one else did. How lucky he was!
a soup, a salad, and anything____, sir— An apple pie, please
Such poets as Shakespeare____widely read，of whose works，however，some______difficult to understand