— Did you call on any of your old friends when you returned to your hometown ?
—______ of them . They were all very busy .
| A．Nobody | B．None | C．Both | D．Neither |
Teachers recommend parents_____their children under 12 to ride bicycles to school for safety.
| A．not allow | B．do not allow |
| C．mustn’t allow | D．couldn’t allow |
The following are some popular websites________people can sell goods to each other.
| A．where | B．which | C．when | D．whose |
______ by a snake, she was frightened of it.
| A．Being bitten | B．To bite | C．Having been bitten | D．Biting |
My sister was very unhappy for _______ to the party.
| A．having not been invited | B．not having invited |
| C．having not invited | D．not having been invited |
I really don’t know ________ I had my money stolen.
| A．when was it that | B．that it was when |
| C．where it was that | D．it was where that |