One of the two sisters ________ me.
| A．sit next to | B．sit next in |
| C．sits next to | D．sits next for |
You’d better stop ________ .You look too tired.
| A．work | B．working | C．to work | D．worked |
My teacher encouraged me _______ more books.
| A．reading | B．to read | C．to reading | D．read |
-- __________ does your brother look?
-- He looks __________ .
| A．What; happily | B．How; happily |
| C．What; happy | D．How; happy |
— Could you teach me how _________ cakes? — Sorry, I don’t know.
| A．make | B．making |
| C．to make | D．made |
I find _______necessary to do everything we can ____________protect the environment.
| A．it; do | B．this is; do to |
| C．it; to | D．it; in order that |