—What is the population of China? —China has ____population of l.3 billion.A.the;the B.a;a C.a;the D the;a
American women usually consider their best friends as someone ________ they can turn when in trouble.
He is always serious and doesn’t like _____.
No one knows when such a custom first _____.
The students pretended_______ attentively when the teacher came in.
________ he returns to his native land.