I like getting up very early in summer. The morning air is so good _________.
| A．to be breathed | B．to breathe |
| C．breathing | D．being breathed |
_____ work has been done to prevent the river being polluted.
A .A number of B A mass of C Several D. A good many
. I was sleeping when the fire ______ and then it spread quickly.
A. broke out B put out C. came out D. got out
_______ you do it, you’d better do it well.
A. Now that B After C. Although D. As soon as
He has ____ for language, while his sister is a ____ pianist.
A gift, gifted B a gift; gifted C. a present; gifted
D. a gift; gift
Do you know the boy _____ under the big tree? A lay B. lain C. laying D. lying