Let’s ________ these bottles into different boxes for different use.
A. choose B. drop
C. separateD. produce
It’s necessary _________ us _________ more trees in spring every year.
A. of; to plant B. for; to plant
C. of; plantingD. for; planting
In Britain, people won’t touch you or push past you if you’re _________.
A. in some ways B. in their way
C. by the wayD. in different ways
Three years has passed _________ they came to this school.
A. since B. forC. whenD. before
The house is made _________ bamboo and it is made _________ six rooms.
A. up of; of B. of; from
C. of; up ofD. from; of
—You are late again. The class _________ for five minutes.
—Sorry. There’s something wrong with my bike.
A. began B. has begun
C. was onD. has been on
