A really works B do works C do work D does work
熱心網友
選擇A, do+V 用于強調什么，一般不用于表述，更多用于單句。而A項是說實際情況，用REALLY沒錯！
熱心網友
選A,在肯定句中不能does work,所以排除D
熱心網友
He hasn\\\'t been successful in his study,but he works really hard.側重點不同吧
熱心網友
I\'d choose (D) but cannot see why (A) is wrong.