—You see, I’m poor in maths, you are not good at English, and... — That’s ____ we should help each other.
The teacher asked a very difficult question. It was Ted who finally _____ a good answer.
I just wonder _______ that makes him so excited.
-I like Tom very much_________he sometimes gives me some trouble. -Oh, it's unbelievabae.
When I came back to my hometown again, I found it changed so much that I could hardly _______it。
_____people who learn Engiish as a foreign language ________more than 750 million.