----Where is Mr. Smith?
----He ______ America on business. He ______ back in a year.
| A．has gone to ; will be | B．has gone to ; come |
| C．has been to ; will be | D．has been to ; will come |
What do you think is the best way tothe pollution problem?
| A．deal with | B．work out | C．show off | D．come out |
Do you know who to take part in the competition?
| A．chooses | B．has chosen | C．chose | D．was chosen |
—Did your sisters go to the concert last night?
—No, we went to my aunt's birthday party.
| A．both | B．all | C．either | D．none |
—David, someone called you last night.
—Oh, who was ?
| A．she | B．it | C．he | D．that |
We all think Bill istaller of the two.
| A．/ | B．the | C．a | D．an |