Valentine's Day is almost here: ________ time of year when some of us enjoy ________ company of a loved one, while others feel lonely being alone.
#7995
A
the；不填
B
a；a
C
a；the
D
the；a
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-- We had really smoggy December this year. --- I can’t remember winter when air was polluted so severely.
#8047
A
a; /
B
a; the
C
the; the
D
a; a
Going to _______ Taiwan for holiday is _______ enjoyable and exciting experience for most people from the mainland of China.
#9421
A
不填; 不填
B
a ;the
C
不填; an
D
the; 不填
—John has put forward _______ most challenging question for us to answer. —Yes, it really is. I have never heard _______ harder one.
#10301
A
the; 不填
B
不填; the
C
the; the
D
a; a
---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