While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.
#9824
A
a , /
B
an, /
C
the, an
D
an, the
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Because he has been out of _____ work for months, Jack now has to depend on his parents for _____living.
#8880
A
/; a
B
the; a
C
/;/
D
the; /
After dinner he gave Mr. Richardson ______ ride to ______ Capital Airport.
#10397
A
the; a
B
a; the
C
不填; a
D
不填; the
The death of Kim Jong I1 was great surprise to the world and it is reported that he died while he was traveling to inspect somewhere in flesh.
#8725
A
the; a
B
不填; a
C
a; 不填
D
a; the
It’s second time in five days that he has asked me for higher pay.
#9548
A
不填；a
B
a;the
C
the；a
D
the；the