你捡到一条短裤，你想问Gogo这是不是他的短裤，你会问Gogo：
A.Whose shorts are these？
B.Are these your shorts, Gogo?
C.These are your shorts.
( ) The mouse is 
front of the cat.
| A．on | B．in | C．at | D．to |
( ) 
first, I fell over. But it didn’t hurt.
| A．On | B．In | C．At | D．To |
( ) Chinese people invented
.
| A．print | B．printing | C．printed | D．prints |
( ) There 
a book and two pens in the bag.
| A．were | B．are | C．is | D．have |
( )Did you 
it in your bag?
| A．saw | B．look | C．look at | D．look for |