Our teacher told us that light _____ much faster than sound.
A.traveled B.travels C.is traveling D.was traveling
In our class _____ of the students _____boys.
A.third fifths; is B.third fifth; are C.three fifth; is D.three fifths; are
—_____ you _____ your homework yet?
—Yes, I _____ it ten minutes ago.
A. Did ; do; finished B. Have; done; have finished
C. Have; done; finished D. Will; do; finish
It’s necessary for you _____ exercise every day.
A.taking B.to take C.take D.takes
—Could you tell me _____?
—Sorry, I don’t know.
A.where are my socks B.where can I find my socks
C.where my socks are D.where my socks put
The supermarket provides customers _____ plastic bags for free.
A.on B.with C.of D.in
