While ___ along the street, I met an old friend of mine.
| A．I walking | B．was walking | C．I am walking | D．walking |
—_____ do you like the match?
—More exciting than _____.
| A．How; to expect | B．How; expected |
| C．What; expected | D．What; to expect |
Betty’s parents are away for the week, so I think I’d go over to keep her _____.
| A．company | B．firm | C．absence | D．favor |
True friendship is like sound health, _____ value is seldom known until it is lost.
| A．whose | B．of which | C．as | D．which |
_____ not to hang out at midnight, the boy headed home soon.
| A．Reminding | B．Having reminded |
| C．Reminded | D．To remind |
We could invite John and Barbara to the Friday night party.
Yes, ____? I'll give them a call right now.
| A．why not | B．what for | C．why | D．what |