You won the first prize in the physics contest! — ________ ! I made several terriblemistakes .

It’s important _________ us _________ _English well.

Must I finish my homework first，Mum—Yes，you________ do anything else before you finish it.

He didn’t understand French, so I offered to _____ forhim.

Did you borrow the comic book from the library —Yes. I ________ it for three days. I’ll return it this afternoon.