问题

He could not __________ a right answer, so he felt very sad.

A:in the end
B:at the end
C:by the end
D:to the end;

正确答案是：

同类题型

It’s really ________ when a train is late and there’s no explanation. [ ]

The conflict had developed into a stage______ the two countries were gathering big troops on the border.

When will Mr. Black come to Beijing –____September 5.

He usually ______ home at half ______ six in the evening.

What’s his telephone number—_______ 625-7886.