Must I clean the room now?
No,you ________.You can do it later.( )
needn't
can't
may not
I a middle school student ( )
am
is
are
﹣﹣﹣The weather report says we will expect a sunny day tomorrow.
﹣﹣﹣____. I am going to go climbing with my classmates.( )
A.Bad luckB.I hope so
C.Sounds terribleD.I'm afraid so
Not all children ____ watch this video will become a scientist, but some may become interested in science.( )
A.whomB.whichC.whoD.whose
﹣﹣﹣Have you decided ____ the Expo 2019 Beijing?
﹣﹣﹣This summer holiday.( )
A.how are you going to
B.how you are going to
C.when are you going to
D.when you are going to
Dirty air and water are harmful. They ____ kill plants, and even people.( )
A.canB.can'tC.shouldD.shouldn't