The school _________ we met a famous scientist is not big.
A、which
B、onwhich
C、whose
D、where
Thesignattheentrancetothebuildingsays“Thepets_____________!”
A、Keepout
B、Keepon
C、Keepoff
D、Keepaway
_____ seen ,it will never be forgotten.
A、Once
B、After
C、Though
D、Unless
Theschool_________wemetafamousscientistisnotbig.
A、which
B、onwhich
C、whose
D、where
The baby always sleeps with his eyes half_____ .
A、open
B、opening
C、toopen
D、opened