---We could invite John and Barbara to the Friday night party.
---Yes, _________? I’ll give them a call now.
| A．why not | B．what for | C．why | D．what |
- How could I thank you enough?
- Don't mention it. Any other man_____that.
| A．would do | B．will do |
| C．would have done | D．must have done |
- How long did David work here?
- For half a year, he didn't leave much_______on us.
| A．expression | B．instruction |
| C．conclusion | D．impression |
It remains to be seen________North Korea will remain stable under its new young leader.
| A．when | B．whether |
| C．why | D．That |
How did you manage to get to the school on time_________you missed the school bus?
| A．when | B．if |
| C．once | D．because |
Readers are required to________the rules of the library and mind their manners.
| A．review | B．confirm |
| C．observe | D．Manage |