________ material used for running tracks in schools across China may be ________ danger to children's health.
#7879
A
/；a
B
The；a
C
/；the
D
The；the
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Have you ever found _____ flash drive has no enough space? Better replace it for ____ bigger one.
#9124
A
the; the
B
a; a
C
a; the
D
the; a
The development of industry has been ______ gradual process throughout ______ human existence, from stone tools to modern technology.
#8498
A
不填；the
B
the；a
C
a; 不填
D
a; a
One can not do _______ small talk well for ______ lack of confidence.
#8579
A
a, a
B
the, the
C
/, /
D
a, /
---Please take these letters to ____ post office ， Jack ---With ____ pleasure, Dad.
#9544
A
a; the
B
the; a
C
a;/
D
the;/
Dr. Peter Spence, ______ headmaster of the school , told us , “______ fifth of pupils here go on to study at Oxford and Cambridge.”
#8363
A
不填；A
B
不填；The
C
the; The
D
a; A