摘要： Beijing its best air quality in the first six months of last year. A. saw B. sees C. has seen D. was seeing
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Beijing____its best air quality in the first six months of last year.
[ ]
A. saw
B. sees
C. has seen
D. was seeing
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B. sees
C. has seen
D. was seeing
Beijing ____ its best air quality in the first six months of last year.
[ ]
A. saw
B. sees
C. had seen
D. was seeing
查看习题详情和答案>>
B. sees
C. had seen
D. was seeing
Beijing its best air quality in the first six months of last year.
A．saw B．sees C．had seen D．was seeing
查看习题详情和答案>>