fety belt saved the boy; otherwise, he _____ inthe accident.

Could you please tell me ________—Of course. Many people here know about it.

Mr Li, I can’t understand everything in class.—-Don’t worry! I’ll _______ the main points at the end.

I’ve tried very hard to improve my English. But by no means________with my progress.

下列各句中，没有语病的一句是（ ）