It is a puzzle to me that Steve who has been working ________ wants to quit the course.

In Shenzhou VI, Chinese astronauts aren＇t only spaceship drivers, _______ machine repairers and scientists.

In recent years much more emphasis has been put ________ developing the students＇ productive skills.

In chemical factories, employees sometimes receive _______ pay for doing dangerous work.

In Britain, the best season of the year is probably ____spring.

I＇m sorry to have taken up too much of your _______ time.

I＇m not particular _______ my clothes; I don＇t mind what I wear.

I＇m going to the hospital to _____my decayed tooth pulled out.

I＇m going to have a rest and _______.

______ I like the color of the hat, I don＇t like its shape.

I have taken someone else＇s T-shirt by mistake. Is it Jane＇s? - It _______ be hers. She seldom wears red.