He was unhappy when he sold his guitar. After all, he ______ it for a long time..

told her we weren’t going to be friends any more because she couldn’t ________ .

When you come to the fence, you can see a notice________there saying “________the grass”. [ ]

In order to get good marks, he has changed his attitudes _____ study.[ ]

ew years, the coal workers theirlungs X-rayed to ensure their health.