问题
选择题
Peter hurried through dinner, changed into old clothes, _______ in the lab for three hours.
A．worked
B．working
C．and worked
D．to work
答案
答案：C
在英文中表示并列的动词短语，用and连接，表示的时态要一致，故本题的空格处填and worked，故本题选A。
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