Pollution is a serious problem. Scientists have _______ some good ways to save it.
| A．come up with | B．come on | C．come out | D．come up |
__________,Are you Mary?
A.Excuseme;
B. Thanks
C. You’re welcome.
Dale’s books arethe floor(地板).
A. in B. under C. on
What’s that ________ Chinese?
A. withB. toC. in
——Is your name Cindy?
——.
A. Yes, I am.
B. Yes, it is.
C. Yes， I am not.
______ my baseball? It’s under the chair.
A．Where
B．Where’s
C．Where’re