If you are busy now, I _ you later to talk about it
| A．call | B．called |
| C．will call | D．have called |
______________ do they donate money for?
| A．Why | B．How | C．What | D．When |
She was too busy ______________ with me at that time. I was unhappy about that.
| A．to talking | B．talked |
| C．to talk | D．talking |
---My father ______________ New York with my grandparents.
---Really? ______________ will they come back?
| A．has been to; How soon |
| B．has gone to; How soon |
| C．has been to; How long |
| D．has gone to; How long |
We haven’t heard from Bill ______________ he left here.
| A．when | B．before | C．since | D．while |
There ______________ great changes in our hometown in the past fifteen years.
| A．were | B．have had |
| C．has been | D．have been |