单项选择题

Mr. Brown’’s condition looks very serious and it is doubtful if he will_______.

A．pull back
B．pull up
C．pull through
D．pull out
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单项选择题
Try ______ the green button to see if the machine will start.
A．press
B．to press
C．pressing
D．to have pressed
单项选择题
______, I’’ll love him all the same.
A．He were rich or poor
B．Be he rich or poor
C．Being rich or poor
D．Were he rich or poor
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