( ) 1. Are you going for a picnic __________ Sunday?
A. at B. on
C. in D. with
( ) 2. What are you going to do the weekend, Lily?
A. at B. on
C. in D. with
( ) 3. Don’t __________ silly!
A. is B. are
C. am D. be
( ) 4. There are four windows__________ the wall.
A. in B. on C. at D. under
