问题
选择题
1. He kept his head _____ water when he began to learn swimming, but he raised his head now and then
A．over
B．below
C．above
D．Up
答案
答案：C
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1. He kept his head _____ water when he began to learn swimming, but he raised his head now and then
A．over
B．below
C．above
D．Up
答案：C