1.My brother ______at the hospital six days a week.a)worked. b)works2.Steve is

1.My brother ______at the hospital six days a week.
a)worked. b)works
2.Steve is policeman.He ____be polite and wear uniform.
a)must b)may
3.There is ____ sugar in the cake.
a)mush. b)many
4.Look!She ___ the piano.
a)plays. b)playing
5.A dolphin is ___ than a giraffe.
a)cleverer. b)cleverest
6.He is the _____student in our class
A)best. B)better