问题
选择题
Every day we spend half an hour morning exercise。
A．do
B． to do
C． for doing
D． doing
答案
答案：D
题目分析：句意：我们每天花半小时锻炼。Spend time doing sth.花时间做某事，后接动词的ing形式，故选D。
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Every day we spend half an hour morning exercise。
A．do
B． to do
C． for doing
D． doing
答案：D
题目分析：句意：我们每天花半小时锻炼。Spend time doing sth.花时间做某事，后接动词的ing形式，故选D。