7．Since you are here, you ____ as well stay here for long.
| A．can | B．may | C．must | D．Should |
He is said___________a book on the history of Chinese tone bridge , but
I don’t know if he has finished it.
A. to have written B. to be writing C . having writing D writing
There are boys__________from 7 to 14_______age.
A. ranging , of B rang , in C. ranging , in D. range , of
While shopping ,people sometimes can’t help_____into buying something they don’t really need.
| A．persuade | B．persuading | C．being persuaded | D．to be persuaded |
The experiment turned out to be______failure, but “_________failure goes before success”
A a , a B /, / C a , / D / , a
Was it because his mother was ill ______ he didn’t go to school?
| A．so | B．that | C．why | D．when |