I looked up and noticed a snake ______ its way up the tree to catch its breakfast.
| A．to wind | B．wind | C．winding | D．wound |
Be quick! ____!
| A．The bus comes here | B．The bus here comes | C．Here comes the bus | D．Here the bus comes |
Ten years ago, there are an old man ___ in that house.
| A．lived | B．living | C．live | D．was living |
--Would you like to play chess with me?---Sorry, I have to finish my homework
| A．will come | B．is coming | C．come | D．comes |
Have you decided when___?
| A．will you leave | B．to be leaving | C．to leave | D．are you leaving |
How long ago ___ studying at the middle school?
| A．did you stop | B．have you stopped | C．has you stopped | D．do you stop |