Children who are over-protected by their parents may become _____.
Jack reached the company out of breath, only _______ he was fired.
ThereareseveralresearchcentersinChina________acertaindiseasecalledBirdFluis beingstudied.
I ___ the French written papers but failed in the English oral examination.
______ alone in a dark room, the little girl was so frightened as to cry loudly.
— Thanks for your help. — Don’t mention it. I _______ offered some advice.