下列各句中，没有语病的一句是

下列各组词语中，没有错误的—组是（ ）

Have you known each other for long- Not really. ________ we started to work in thisschool.

The president was deeply _______ the issue and ordered the officials to find out a solution as quickly as possible.

Must I return the book this week— No, you ____________. You can ____________ it for 20 days.