My pen-pal Andrew found ______difficult to learn Chinese well.
A. / B. that C. it
He is _____ unusual writer. He can write _____ useful book.
| A．a; the | B．a; a | C．the; an | D．an; a |
Eating a lot of vegetables good for your health.
| A．am | B．is | C．are | D．be |
Did you find the answer the question about TV very interesting?
| A．to， watching | B．of， watching |
| C．to， watched | D．of， watched |
—____do you watch TV every week? —Less than two hours. I often have much homework to do.
| A．How many | B．How much | C．How long | D．How often |
Chinese is different _____English.
| A．to | B．with | C．from | D．as |