30. More than 20 years ago he was badly wounded in the anti-Vietnam war. Since then he can

发布时间：2020-08-16 06:10:03


30. More than 20 years ago he was badly wounded in the anti-Vietnam war. Since then he can only walk      an arm-chair .
A. in
B. on
C. by
D. Over

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(答案→)A. in
B. on
C. by
D. Over
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