The temperature can drop ________zero when winter comes.
| A．under | B．below | C．at | D．over |
I’m trying to find a better way tomy old books.
| A．look on | B．find out | C．deal with | D．break off |
Don’t let our teachers.Work hard, please.
| A．up | B．off | C．down | D．of |
To my ____ , he got there early.
| A．surprises | B．surprised | C．surprise | D．surprising |
– I passed the English exam____ the help of my friend.
| A．by | B．under | C．in | D．with |
My mother told me that my homework must _______ on time.
| A．finish | B．be finish |
| C．be finished | D．finishes |