He stood up and ________ a smile to cover up his disappointment.

The student _____ from the training so much that he was _____ the first prize in the game. 

______ the help of the teacher, the student who wasn’t good at math ______ the difficult problem quickly.

Teenagers shouldn’t be _______ from school although they don’t do well in their studies. 

（2014年安徽省合肥市高三第三次教学质量检测）30. Nervous and anxious, Jill failed ______ a good impression at the job interview.