单词填空。（首字母已经给出，每空一词）

1. If you play against No.1 School, we will go and c________ you on?

2. You may get a headache when you exercise o________ an empty stomach.

3. Kangkang's father is a doctor. He is very busy right now. He is e________ the patients.

4. —Would you m________ lending your dictionary tome? —Not at all. Here you are.

5. When SARS spread in Beijing, many doctors and nurses left their families and took an active part

    in the b________ Against it.

根据《合同法》第十六条规定，要约在( )才算生效。

A．要约人发出要约时

B．受要约人了解要约内容时

C．要约到达受要约人时

D．受要约人接到要约前