We want to know_______.
| A．how old is he | B．how old he is | C．how old he’s | D．how old his |
( ) Different people have different .
A. hobby B. hobbies C. a hobby
( ) The White House is in .
A. France B. China C. Washington D.C.
( )Our teacher always tells us waste water.
A. to not B. not to C. not
( )We should turn the lights when we leave the room
A. on B. off C. in
( )We shouldn’t cut down trees and waste water.
A. too many ; too many B. too many; too much C. too much; too much