_______ the boy was walking down the street, the UFO landed.
A. While B. After C .Before D. until
My friend has the same haircut __________ I do.
A. as B. like C. seem D. looks like
Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
A. hundreds of
B. two hundreds of C. two hundreds D. hundreds
I think he is a student, ____？
A. don’t IB. isn’t heC. is heD. do I
What ____ sad news! We can’t get the movie tickets.
A. a B. an C. the D. /
When she _____ the newspaper, the baby _____ asleep．
A．read; fell B．was reading; was falling
C．read; was falling D．was reading; fell
