问题

I am ________ worried about y parents’healthy conditions
A:think
B:thought
C:have thought
D:am thinking
B:thought
C:have thought
D:am thinking
正确答案是:
同类题型
We should think more of others if we want to ______ them.
He failed the exam again!What should I do,Miss Wang?—In my opinion,your son is________than stupid.
Never _______ in line to get on a bus.—Is it not until you mention me _______ I know of it?
I really don’t want to go to the Party, but I don’t see how I canit.