The police believe that the murder________ 9 p.m. and 11 p.m. yesterday.
—Can they swim in the lake? —________.
They arrived ________ Shanghai ________ a cold morning.
There is a garden ________ the house.
—Must I start now? —No,you ________. A.mustn’t B.can’t C.needn’t
—How can I go to your school? —________.