When Helen saw her tutor nod _______ to her, she calmed down and went on with her performance．

It's our hope that we will play a greater role in the market place and,      ,supply more jobs.

Nelson Mandela, former president of South Africa, devoted himself        to making the black and white equal.

The new group of students are better-behaved than the other group who stayed here___

—I don’t think he should leave his job.—That’s ________ what I told him yesterday.