Not until I went through his paper _________ what rapid progress he had made in writing.

Mary is very clever and _____ worth teaching, but her brother is not Look, he is now _____ asleep in class

I ________you yesterday afternoon，but you ________at home.

_review of 44 studies, American researchers found that men and women ____who ate six key foods daily cut the risk of ______ heart disease by 76%.

The boys is impolite to others and this _________ hurts himself