Look! There are five planes _______ in the sky.
| A．fly | B．flying | C．to fly | D．to flying |
My grandmother worked as a doctor when she was young.
A .liked B. was C. had
Miss Liu often tells us some funny stories.
A. interesting B. boring C. strange
–Do you know about Jay Zhou ?
--He is famous as a singer.
A. friendly B. well-known C. hard-working
If we don’t protect the Earth, more and more wild animals will die out.
A. appear quickly
B. disappear completely
C. stay healthy
It’s wise of you to know how to deal with the problems.
A. wrong B. clever C. polite