In communication, a smile is usually strong sign of a friendly and open attitude.
#9346
A
the; /
B
a; an
C
a; /
D
the; an
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---We can’t expect _____blue sky unless we create ____less polluted world.
#8991
A
a; a
B
a; the
C
the; a
D
the; the
—Would you mind giving your advice on how to improve our efficiency? —If you make _____ most of forty-five minutes classes day after day, there will be _____ switch in grades.
#7855
A
/; /
B
the; a
C
/; a
D
the; /
What ____ pity that you couldn’t be there to receive _____ prize!
#10420
A
a; a
B
the; a
C
a; the
D
the; the
F/ friendships fade away if there isn’t ___good balance between the give and the take．
#9497
A
The;/
B
/;a
C
The; a
D
/;the