Everyone is supposed _____ a seat belt in the car.
[ ]
A. wearing
B. to wear
C. to be worn
D. to dress
B. to wear
C. to be worn
D. to dress
The boy was seen _____ his bike a moment ago.
[ ]
A. fell off
B. to fall off
C. fall off
D. to fall down
B. to fall off
C. fall off
D. to fall down