用括号内所给词的适当形式填空

1. I am afraid there _____(be) a meeting this afternoon. I can't join you.

2. My uncle says he _____(come) back in two weeks.

3. We _____ go skating next Sunday.

4. There _____(be) a football match in our school this afternoon.

5. Thank you for _____ (give) me so many beautiful flowers.

审计人员从总体规模为1000个、账面价值为300 000元的存货项目中选取200个项目(账面价值50 000元)进行检查，确定其审定金额为50 500元。若采用比率估计法，审计人员可以推断出该存货项目总体金额是：

A．300 500元

B．302 500元

C．303 000元

D．347 500元