—Do you know ________ the school?
—About twenty minutes ago.
| A．when he left | B．when did he leave |
| C．when he leaves | D．when does he leave |
The milk ________ to us tomorrow.
| A．will send | B．is sent | C．sends | D．will be sent |
I like the movie Harry Potter very much. I ________ it three times.
| A．watch | B．watched |
| C．was watching | D．have watched |
We will wait until everyone ________ back.
| A．comes | B．come |
| C．will come | D．is coming |
Wang Hui hopes ________ a scientist in the future.
| A．be | B．being |
| C．to be | D．been |