单项选择题

He ______ working till he was seventy years old.

A．kept up
B．kept on
C．kept to
D．kept out
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单项选择题
Will you show me the girl ______ name is Jane
A．her
B．who' s
C．whose
D．which
单项选择题
I ______ on seeing the manager. The service in this hotel is terrible.
A．insist
B．persist
C．affirm
D．protest
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