You must put a s______ on the letter before posting it.

单项选择题Ⅱ. 完形填空 Close 阅读下面短文，掌握其大意，然后再各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

单项选择题Dick wanted to get more money to ______.

单项选择题Acid rain ______.

单项选择题People in Micronesia show yes by （）

A．nodding heads
B．raising eyebrows
C．shaking heads
D．saying "no"

单项选择题The underlined word compassion is the closest in meaning to ______.