We can have ___ blue sky if we create ___ less polluted world.
#48118
A
a. a
B
a, the
C
the, a
D
the, the
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As we know, England is European country and Singapore is Asian country.
#33638
A
an； an
B
an； a
C
a； A
D
a； an
—What do you think of Joe?—He is ________ honest boy.He can play ________ violin very well.
#33749
A
a; an
B
an; a
C
an; the
D
a; /