Have you ever felt your cheeks get hot，your palms sweaty or been afraid to _______your teachers’ eyes when they are about to call on someone?

Suddenly the idea came to me ____ I mightturn to Mr．Smithfor help．

Sarah wants to be thin, so she _______ eats meat.

Had the boy worked harder, he ______ the exam.

________honest boy! He is ________ best student of all.