问题
选择题
Do you often spend half an hour your homework every day?
A．for
B．in
C．at
D．On
答案
答案：D
spend+时间+doing sth或on sth表示某人花费多长时间做某事的含义，故本题选D。
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Do you often spend half an hour your homework every day?
A．for
B．in
C．at
D．On
答案：D
spend+时间+doing sth或on sth表示某人花费多长时间做某事的含义，故本题选D。