Obama is ____________ the first black president of the USA. A. known as B. known of C. known for D. known to
The food smelt terrible but Tom _______ taste it.
It _______ that they will have the final exam next week.
There are two cars in front of the building. One is red and ________ is black.
If more trees ________ , our city will be more and more beautiful.
This brush pen is made _______ bamboo.