．We can never expect _________ bluer sky unless we create _________ less polluted world.
#7748
A
a；a
B
a；the
C
the；a
D
the；the
推荐题目
Susan, _______ university student from Europe, teaches me _________ art in her spare time.
#9285
A
an; /
B
a; the
C
an; the
D
a; /
There was _____ time when he was crazy about everything to dowith____ nature because of many years’ imprisonment.
#8754
A
the; /
B
the; the
C
a; the
D
a; /
There is no doubt that the Diaoyu Islands are _______ part of China and what some Japanese have done recently is actually ________ offence against Chinese people.
#8722
A
a; /
B
a; the
C
the; /
D
/; an
—What about ______ lecture you attended yesterday? —To tell the truth, it was too boring．I can’t stand ______ lecture like that．
#9924
A
a; the
B
the; a
C
the; 不填
D
the; the
Tom is determined to go on _______ voyage across the Atlantic Ocean again although he is still in ______ bad condition.
#9776
A
the; the
B
a; the
C
the; a
D
a; /