My brother's used to hard work.改為否定句
My brother ( ) hard work .
l'm proud to be able to help so many people.改為一般疑問(wèn)
（ ）be able to help so many people?
Doctors can cure these cases.改為被動(dòng)語(yǔ)態(tài)
these cases（ ）by doctors.
Blindness affects {about 45 million} people around the world.對(duì)｛ ｝內(nèi)提問(wèn)
( )around the world?
Volunteer doctors perform operations on patients on the plane.改為同義句、
Volunteer doctors （ ）on the plane.
The are such poor patients that they can't afford to travel to hospitals.改為同義句
The patients are ( ） afford to travel to hospitals