－You’ve dropped __________ “s” in the word “across”.－Oh, you are right, __________ letter “s” should be doubled like this “cross”.
#32593
A
a, a
B
an, a
C
an, the
D
the, a
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—The charity show is really wonderful.—Yes. I think it’s ________ great success.
#32034
A
/
B
a
C
the
D
an
Look! There is _____ colour bird in the tree. ______ bird is singing.
#34399
A
a; The
B
/; The
C
the; A
D
a; /
Doing exercise for_____ hour every day is good for your _____ uncle.
#34271
A
a, an
B
an, an
C
a , /
D
an , /