问题
选择题
You afraid of doing homework. You know, it’s easy. Just be careful.
A．don’t have to
B．have to be
C．don’t have
D．don’t have to be
答案
答案：D
题目分析：句意：你不必担心做作业，你知道是很容易的，仔细点就行。这里是短语be afraid of doing sth害怕，担心；这里是have to的否定形式don’t have to，后面要跟动词原形。故选D。