The sick children _______(send)to the hospital.The doctors and nurses are taking care of them now
问题描述：
The sick children _______(send)to the hospital.The doctors and nurses are taking care of them now
答
were sent
答
have sent 生病的孩子已被送进医院
答
注意3处,1主动与被动,2时态,3单复数.该句被动和复数是肯定的,至于时态由于前后逻辑不明显,可以由两种表达：
were sent
have been sent