It is _______ pleasant surprise to learn that Mary is ______ great success as a writer.
#8652
A
a; a
B
/; /
C
a; /
D
/; a
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Early this year, thousands of migrant _______ workers cancelled their insurance due to the lack of _______ policy to transfer insurance between difference regions.
#8469
A
the; the
B
the; a
C
/; the
D
/; a
With ________ successful launching of Tiangong1，China's space dream has taken ________ step closer to reality.
#7839
A
the；a
B
/；a
C
a；the
D
the；/
As matter of fact, number of young couples who plan to have a second kid is increasing rapidly.
#8105
A
the; a
B
a; the
C
a; a
D
不填；the
The World Wide Web is ____ computer network that allows ____ computer users to access information for millions of websites via the Internet.
#8797
A
a, the,
B
a, /
C
the, the
D
the, /