---Why didn’t you go shopping with me two hours ago?
---Because my mother________ me outside.
| A．waited for | B．is waiting for |
| C．was waiting for | D．has waited for |
--- When will the popular film star arrive here?
--- I don’t know when he _________. When he _________here, I’ll call you in a minute.
| A．will come, will arrive | B．comes, arrives |
| C．will come, arrives | D．comes, will arrive |
—Were you at Mary’s party last night?
—No, I ____________ my sister. She met with difficult problems.
| A．help | B．am helping |
| C．have helped | D．was helping |
My grandparents____ in that city since 2008.
| A．will live | B．live |
| C．have lived | D．were living |
一Oh，there’s someone knocking at the door．
一 must be that naughty boy.
| A．He | B．This | C．It | D．That |
We can’t do it that way --- but whether it will work is ______ matter.
| A．other | B．another | C．each | D．every |