China takes the leading position _____ space industry.
A.in B.at C.of D.up
I spend much money on books _____ I am not rich.
A.but B.so C.even though D.as if
—What a nice classroom!
—It _____ every day.
A.is cleaning B.has cleaned C.must clean D.is cleaned
-I hear that you have a brother, but I have never seen him.
-He the hometown since many years ago.
A. left B. has left C. was away from D. has been away from
-Congretulations to you for your success!
-Thank you! your help, I can’t make it.
A. With B. Without C. Because of D. Thanks to
I think important for us to learn a foreign language well.
A. this B. that C. it D. them
