There is ______ “s” and ______ “u” in the word “bus”.
| A．an; a | B．an; an | C．a; an | D．a, an |
Rongshui is ___________ city in Liuzhou.
A. big B. bigger C. the biggest
__________ people visit Guilin every year.
A. Millions of B. Million of C. Million
I’d like to have a word _____________ Tony.
A. on B. with C. in
_____ the environment is important for human beings.
| A．Take care of | B．Taking care of | C．Took care of | D．Take the care of |
I can’t stand _____ for you so long.
| A．to wait | B．waiting | C．waits | D．waited |