One of them hasn't prepared __ lessons very well.
| A．one’s | B．his | C．their | D．our |
I guess we have already talked about this before but I’ll ask you again just ________.
| A．in case | B．in return |
| C．by nature | D．by chance |
_______difficulties we may come across, we will help one another to overcome them
| A．Whatever | B．However |
| C．Whenever | D．Wherever |
Even if you are a top student, you sometimes _______ make some mistakes.
| A．can | B．must | C．should | D．need |
--- Shall I give you a ride as you live so far away?
---- Thank you. ______.
| A．It couldn’t be better |
| B．Of course you can |
| C．If you like |
| D．It’s up to you |
Their use was limited by laws, the first of which ______ the 14th century.
| A．dates back to | B．dated fro |
| C．dates back | D．dating back to |