问题

He has been working so hard _____ he could answer such a difficult question[ ]

A: No wander
B: No wonder
C: why
D: because

正确答案是：

同类题型

She doesn’t suppose the prices will go down this week, _______?

HelloYou ____68442936I’m sorry I’m unable to answer your call right now

I could hardly recognize Mary just now!–Me neither. She so much.

These teenagers don’t know much of the world yet;that’s why they are so easily_____

Which sentence structure is “S+V+P”