The boss went into the house , the five boys in the rain .
A. left ;standing B. leaving ; standing C. left; stand D. leaving ; stand
This is the small house less than 15 square meters, under ______ roof lives a large family of three generations.
A. which B. that C. its D. whose
Since then the number of people taking driving lessons ________ 20％.
A. has increased to B. increases by C. has increased by D. have increased by
To understand the grammar of the sentence, you must break it ____ into parts.
A. down B. up C. off D. out
The whole class________ the teacher attentively.
A. are listening to B. is listening to
C. are listening D. is listening
We don’t allow ____ in the office. But you are allowed ______ in the open air.
A. smoking; smoking B. to smoke; to smoke
C. smoking; to smoke D. smoke; smoking
