—Has the doctor _______the old woman of her illness? —No, he ______ her but didn’t ________ her.
Tom sacrificed his personal life ________ he could get ahead in his career.
There is still a strong argument ________ mobile phones are a particular risk to children.
Students ________ remain in their seats until all the papers have been collected.
John Wood,an Internet blogger,discovered that Samsung ________ for not protecting its workers from a dangerous chemical used on its phones.
The sign says that children are admitted only if ________ by an adult.