单项选择题

A．Fierce competition.
B．Network problems.
C．High price.
D．Government policy.
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单项选择题
A．Serious.B．Uncommon.C．Usual.D．Light.
A．Serious.
B．Uncommon.
C．Usual.
D．Light.
单项选择题
A．She’’s not home now.B．He’’s not sure if she’’s there.C．She’’s talking on another phone.D．He can see her.
A．She’’s not home now.
B．He’’s not sure if she’’s there.
C．She’’s talking on another phone.
D．He can see her.
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