Study hard, _____ you are sure to have a good result in the exam.
A．or B．and
C．for D．but
There is a lot of traffic in this city, _____ look both ways before crossing the street.
A．so B．and
C．but D．for
Mother was ill, _____ Father cooked for us instead.
A．but B．or
C．so D．and
—Da-Fa is cleaning the house
—_____ some of his friends are coming for dinner.
A．because B．but
C．if D. so
“Are you going to eat here ____ take it away?” asked the waiter..
A．and B．so
C．or D. but
None of the shoes in the shops are the right size. They are _____ too big _____ too small.
A．both; and B．neither; nor
C．either; or D．not only; but also
