Question

There are many flowers and trees on ______sides of the Century Road.

A. each
B. every
C. both
D. all

Answer 1

答案C
考查代词的用法。each和every“每一个”，后可接单数名词；both“两者都……”后接可数名词复数；all“三者（或三者以上）都……”。句意“在中心公路的两边有许多花和树。”故选C。