If there are ____ trees, the air in our city will be ___ cleaner.
A. Less, more B. more, more C. more , much
--Can I help you?
-- I am looking for a nice house ____ three living rooms.
A. of B. with C. from
Look! There are some students _____ in the pool.
A. swim B. are swimming C. swimming
Although he is young, ______ he can tell me ______ his parents.
A. but, about B. /, about C. /, on
There ____ a book sale in our school next week.
A. is going to have B. are C. is going to be
The box is ____ heavy ____ move.
A. too, as B. so, that C. too, to
