WTO《农业协定》规定，属于必须进行关税化的农产品，当基期（即1986~1988年）的进口不足国内消费量的（）%（发展中国家为3%）则该国应承诺建立最低进口准入机会。

A.10

B.5

C.4

D.2

---Do you work in this office?

---No, as a clerk in this office is on vacation, I’m just ____ here for about a week.

A．hanging out

B．working out

C．turning out

D．helping out