(B)21.There is ________ elephant and ________ tiger in the picture.
A．a；an B．an；a C．a；a D．a；the
(D)22.I'm thirsty (渴的)．Please get some ________ for me.
A．clothes B．music C．bread D．water
(A)23.—Why do you think koalas are ________ animals?
—Because they sleep day and night.
A．lazy B．busy C．strict D．noisy
(C)24.________ pandas are friendly，________ he wants to see them first.
A．Because；so B．So；because
C．Because；/ D．So；/
(B)25.Mary and Tina are my ________.They are ________ to me.
A．friendly；friendly B．friends；friendly
C．friend；friendly D．friendly；friends
