单项选择题

A．are
B．become
C．remain
D．come
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单项选择题
A．readB．subscribeC．collectD．keep
A．read
B．subscribe
C．collect
D．keep
单项选择题
The American Red Cross provides all the following services EXCEPT _____.
A．providing first aid
B．providing blood
C．caring for those who are in need
D．demonstrating water safety
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