--__________the window, please. --OK. Now you see the window _______.
| A．Be clean, cleans | B．Be clean, is cleaning |
| C．Clean, is clean | D．Clean, cleans |
Emma ，can you introduce _______ to Alice ?I want to meet her .
| A． him | B．his | C．me | D． my |
Do you know ____________________?
| A．what he happened | B．what the matter is with him |
| C．what happened to him | D．what did he happen |
The Blacks will be back from their holiday ______two days.
| A．for | B．later | C． in | D．behind |
If he _____ free tomorrow , he ______ to see me .
| A．will be; will come | B．has ; comes |
| C．is；will come | D．is; comes |
She said _______ others changed her life .
| A．help | B．helps | C．helping | D．helped |