It is not __________ for me to borrow all the books from the librarynow because I can only borrow one each time.
| A．difficult | B．convenient |
| C．available | D．important |
Children often get presents ___ Christmas and ___ their birthdays.
| A．on…at | B．in…on | C．at…on | D．at….in |
You can find the new hospital ___ the end of the street.
| A．in | B．at | C．on | D．by |
___ the end of this new term we'll have graducated from middle school.
| A．In | B．By | C．At | D．On |
The mid-term exam is to be held ___ the end of this month.
| A．on | B．by | C．in | D．at |
I’ll be free ___ seven o’clock.
| A．after | B．on | C．in | D．at |