—Where do you live, Jack?—I live on the _____ floor. My room is No._______.
—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? —________.