—Clean-Up Day is coming. How do we let more people know it?—We could advertisements after

问题补充：

—Clean-Up Day is coming. How do we let more people know it?

—We could advertisements after school.

A. call up

B. hand out

C. put off

D. think up

答案：

A. call up

(答案→)B. hand out

C. put off

D. think up

解析：

词组辨析：call up回想起，hand out分发，put off推迟，think up想起，根据句意：清洁日要到了，我们怎么让更多的人知道呢？---我们可以放学后散发广告。选B。