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单项选择题
A.Being tested
B.Having been tested
C.Having tested
D.Testing
单项选择题
A.to stay
B.stayed
C.staying
D.having stayed
单项选择题
A.expanded
B.prolonged
C.delayed
D.exceeded
单项选择题
A.assume
B.ensure
C.guarantee
D.confirm
单项选择题
A.cares for
B.applies for
C.allows for
D.calls for
单项选择题
A.symbols
B.symptoms
C.signs
D.conditions
单项选择题
A.since he became
B.would he become
C.that he became
D.did he become
单项选择题
A.infectious
B.powerful
C.influential
D.suspicious
单项选择题
A.above all
B.first of all
C.most of all
D.and all