1.You ____ park your car in front of the school gate.

1.You ____ park your car in front of the school gate.
A.needn't B.mustn't C.couldn't D.must
2.You should wash it _____ hand in cool water.
A.by B.with C.use D.in
3.Keep ____.The paint is still wet.
A.of B.away C.off D.from
4.This sign tells the exit _____ the gate of the cinema.
A.to B.of C.at D.in
5.Our office must be kept _____ everyday.
A.clean B.to clean C.cleaning D.cleans