( )1.Lily’s mother is _____ teacher in a school.
A a B an C the D /
( )2. These days I find ___ hard for me to go to sleep at night.
A this B that C its D it
( )3.Tina ____ be in Paris, for I saw her here only half an hour ago.
A mustn’t B may not C needn’t D can’t
( )4. I guess there must be someone ____ outside th
