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
The two sportsmen congratulated each other________winning the match by shaking hands.
A．with B．on C．in D．to
