问题
选择题
20．He took much pain-killer last night, thus ______ his headache.
A．relieving
B．to relieve
C．relieve
D．relieved
答案
答案：A
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20．He took much pain-killer last night, thus ______ his headache.
A．relieving
B．to relieve
C．relieve
D．relieved
答案：A
