Maria has _____ trouble _____ math, so she often asks her math teacher for help.
A.much; understanding B.no; with
C.many; understanding D.not; to understand
Teachers should _____ their students to practice _____ English as much as possible.
A.encourage; speaking B.let; speak
C.make; speak D.keep;speaking
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
