___ years ago, the population of China was over 20 million.
A．Four hundreds
B．Four hundred
C．Four hundred of
D．Four hundreds of
My father shows me how _____ a camera.
A．use B．to use C．using D．used
As soon as I know it, I’ll _____ you ______.
A．call; up
B．let; to know
C．write; letter
D．send; e-mail
---My prize is different from ______.
---But _____ is the same as mine.
A．Dick; yours
B．Dick’s; your
C．Dick’s; you
D．Dick’s; yours
Jane likes singing.We often hear her ______ after class.
A．sing B．to sing C．sings D．singing
While the boy ______ down the street, the UFO _____ .
A．was walking; was landing
B．walked; landed
C．was walking; landed
D．walked; was landing
