A competent speaker of a language must have a(n)________ of these different styles.
| A．comment | B．observation | C．command | D．response |
.As is known to all,____ tiger is in____ danger of dying out.
| A．a; a | B．the; / | C．a; / | D．the; the |
.—Is there anyone who is gong the Great Wall?
_______
| A．None | B．No one | C．No | D．Not any |
British people always talk about wether.
| A．the; the | B．/ ,/ | C．/; the | D．the; / |
Cloning the sheep ----Dolly is a big in science.
| A．progress | B．run | C．jump | D．rush |
He is doctor at all. Don’t trust him.
| A． no | B． not | C．any | D．a |