The ice isn’t ______________ to skate on.
A. thin enough B. enough thin C. thick enough D. enough thick
---Are you going to ____________ your friends to your party?
---Yes, sure.
A. like B. want C. make D. invite
---Must I clean the floor now?
---__________. It is too dirty.
A. Yes, you needn’t B. No, you needn’t
C. No, you mustn’t D. Yes, you must
---How long may I _____________ the book?
---Two weeks.
A. borrow B. lend C. buy D. keep
These aren’t my keys. Mine ___________ in the drawer.
A. is B. are C. am D. were
The old man is too tired _________ go any further.
A. enough B. can’t C. to D. so
