问题

When I passed there, I saw an old man ____________ on the side of the road, crying hard.

A:sing，dance
B:singing，dancing
C:singing，dance
D:sing，dancing;

正确答案是：

同类题型

I thought I was going to fail the exam，but I succeeded ________[ ]

How times flies! Ten years ______ passed.

We have been told that under no circumstances the computer in the office for personal affairs.

More and more people have lost their jobs. No one knows how long it will be before the nation _______ from its present trouble.

Though he is busy, he is very _____ and makes a telephone call to his parents from time to time and tries his best to spare some time to visit them.