The doctor will not permit mother up __________ her leg is better.
A．if B．until C．when D．unless
Either his wife or his friends __________ his birthday party.
A．has attended B．have attended
C．attends D．is attending
No one knows __________ it will be fine tomorrow and __________ we can play basketball together.
A．whether; whether B．that; whether
C．whether; that D．that; that
Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
A．to cover B．to be covered
C．to have covered D．to have been covered
They were having an argument about __________ turn it was to do the cooking.
A．which B．what C．whose D．who
His son has __________ the running of his company, including six London theatres.
A．taken up B．taken off C．taken on D．taken over
