A qualified doctor has to constantly update his knowledge in order to maintain his professional _____.
Talking of Project Hope is always _______ us of the bigeyed girl called Su Mingjuan.
Come and see me whenever ___________.A you are convenient B you will be convenient C it is convenient to you D it will be convenient to you
Only after his friend came _______.
______ with a difficult situation, Amold decided to ask his boss for advice.
Would you gather enough courage and energy to ______ the leadership of the dance group?