The little girl was allowed to go swimming ____ she must keep herself near her father.

A．when

B．in case

C．in order that

D．on condition that

不孚众望：弹冠相庆（）

A．脱颖而出：炙手可热

B．殚精竭虑：危言危行

C．一蹴而就：处心积虑

D．强词夺理：良莠不齐