问题
选择题
-- They look so tired.
--Yeah. They _____________ day and night. So they are all in poor health.
A．are made work
B．are made to work
C．made to be worked
D．are making to work
答案
答案：B
考查动词make的用法。make sb do sth，使某人做某事，do前面不能加to，而在被动语态中，必须加上to，故选B。