—The dictionary is a useful _______ for understanding new words.—I think so.
A. plan B. tool C. way
Can you see 11-year-old boy and one-year-old cow in the field?
| A．a; an | B．an ; a |
| C．a; a | D．an ; the |
Lots of students are_________ in tigers and other wildlife.
| A．interested | B．interest |
| C．interesting | D．doing |
Why does Liu Tao look all day long?
| A．sleepy | B．sleep |
| C．to be sleepy | D．sleeping |
Our English teacher often asks us_________ English _____in class.
| A．speak; loud | B．to speak; slow |
| C．speak; loudly | D．to speak; loudly |
I’m sorry I’m late again________ the heavy rain.
| A．as | B．so |
| C．because | D．because of |