---Why didn’t the little boy raise his hand in class today ?
---- Maybe the questions are ______ difficult for him_______ answer .
| A．too, to | B．enough ,to |
| C．not,to | D． so,that |
The hall is ______ to hold one hundred people.
A. enough big B. big enough C. as big
I eat five meals a day. I have _____ 5 pounds.
A. put on B. put up C. put in
Our classroom must______every day.
A. clean B. be cleaned C. is cleaned
The boy always makes _______ cry.
A. she B. her C. hers
Tea was invented by _______ accident.
A. an B. the C. ＼