单项选择题

A．I must be careful not to catch cold.
B．I am careful and never catch cold.
C．I’ll take care of the boy who has caught a cold.
D．The boy is very col
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单项选择题
A．Until noonB．In the day--timeC．At dawnD．By lunch time
A．Until noon
B．In the day--time
C．At dawn
D．By lunch time
单项选择题
A．slightlyB．patientlyC．merelyD．gradually
A．slightly
B．patiently
C．merely
D．gradually
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