Those foreign friends left Guangzhou________．
A．since last week
B．a week ago
C．for a week
D．since a week ago
You________that question three times．
A．already asked
B．have already asked
C．already have asked
D．asked already
Mike________the book for a month．
A．has bought
B．has had
C．had
D．has borrowed
We have been friends since________．
A．children
B．five years
C．five years ago
D．five years before
Li Hong has________the army for 2 years．
A．joined
B．joined to
C．been in
D．joined in
—Jenny，I need some milk．
—OK，Mum．________do you need？
A．How much
B．How many
C．How often
D．How long
