The problem is very difficult. I’m afraid you can’t work it out now.—I fail this time, I will try it again.

_____ at the news that I didn’t know what to say to comfort her.

Which of the two cameras are you going to buy?—I’ll buyof them，so I can give one to my friend．

China has _____ area of about 9,600,000 square kilometers, including Diaoyu Island(钓鱼岛) .

They are _____ children that they can’t dress themselves.