John and I _____ friends for eight years. We first got to know each other at a Christmas party. But we ____ each other a couple of times before that.
| A．had been; have seen | B．have been; have seen |
| C．had been; had seen | D．have been; had seen |
It doesn’t matter___you turn right or left at the crossing---both roads lead to the park
| A．whether |
| B．how |
| C．if |
| D．when |
I wish to thank Professor Smith,without___help I would never have got this far
| A．who |
| B．whose |
| C．whom |
| D．which |
That evening.___I will tell you more about later,I ended up working very late
| A．that |
| B．which |
| C．what |
| D．when |
It is by no means clear___the president can do to end the strike
| A．how |
| B．which |
| C．that |
| D．what |
If we___adequate preparations,the conference wouldn’t have been so successful
| A．haven’t offer |
| B．wouldn’t offer |
| C．hasn’t offered |
| D．hadn’t offered |