按要求完成下列各题。(20分)
（1）These are tiger_cubs．(就画线部分提问)
________ are these?
（2）They are lion cubs.(改为一般疑问句)
________ ________ lion cubs?
（3）The bear can ride a bike.(改为否定句)
The bear ________ ride a bike.
（4）Are those lions? (作肯定回答)
________，________ ________．
（5）What is this? (改为复数句)
What ________ ________？
How many _______ have bicycles?.
A.boy
B.doctors
C.teacher
This child ______ some lovely pets.
A.has
B.have
C.are
Sam is ________. It is eating the bones.
A.sad
B.thirsty
C.hungry
_______ is Danny’s teacher? The old one.
A.Whose
B.What
C.Who
Joe and Lucy _______ the photographs.
A.look at
B.looking at
C.see