22. ---Is this notebook ____, Lily? ---No. ___ is over there.
A. Yours;My B.yours;Mine C.you;My D.you;Mine
23. A gun is made ____ metal; it is used ____ the police.
A.of;by B.for;by C.of;with D.by;for
24.---Where is Mum now?
---I’m not sure. She ____ be in the kitchen.
A.may B.must C.can D.can’t
