Some people argue using _____ nature to meet our own needs may spell disaster, unless we start to look around and understand how ______ clean environment benefits us all.
#9746
A
/; a
B
the; the
C
the; a
D
a; a
推荐题目
One way to understand thousands of new words in gain _____good knowledge of basic word formation.
#10431
A
/
B
the
C
a
D
one
We don’t think the experiment is _______ failure. At least we have gained _______ experience for future success.
#8406
A
the; a
B
a; an
C
a; /
D
/; the
After ______ series of unsuccessful attempts, he has finally passed ____ driving test.
#8303
A
the , the
B
a, the
C
the , a
D
/ , a