Looking ________ the window，you can see a lot of boys playing on the grass．
| A．out |
| B．out for |
| C．out of |
| D．out at |
Look，they are ________ the picture on the wall．
| A．putting up |
| B．looking up |
| C．taking up |
| D．waking up |
The young mother sat down and watched her child ________ a lovely white cat．
| A．play with |
| B．to play with |
| C．plays to |
| D．play to |
—When did you have your school trip？
—________．
| A．In five days |
| B．For five days |
| C．Twice a day |
| D．Five days ago |
Oh，you are here．I ________ you came back．
| A．don’t know |
| B．didn’t know |
| C．haven’t known |
| D．won’t know |