问题

How much difficulty did Lucy have_______ this problem–_______. She’s a good problem solver.
A:to solve ; Nothing
B:solving ; None
C:to solve ; None
D:solving ; Nothing;
B:solving ; None
C:to solve ; None
D:solving ; Nothing;
正确答案是:
同类题型
Dancing on the playground makes her ______ very great.
He has a good sense of humour. He often makes people _______.
There are _____ floors in my house and my bedroom is on the _____ floor.
You were not listening;what troubled you?—I my coming math exam
The Internet gives people the chance to have the information ______to them quickly and cheaply[ ]