The doctor telephoned to say that he couldn't __________ the meeting because he had to look after a patient.
| A．join | B．attend |
| C．join in | D．take part in |
_______ is known to all, Lu Xun was famous as a great thinker.
| A．Which | B．As | C．It | D．What |
I would appreciateback this afternoon.
| A．you to call | B．you call | C．your calling | D．you’re calling |
If something ________, it becomes less and less and eventually disappears completely.
| A．dies off | B．breaks off | C．dies out | D．breaks out |
It’s the first time ______ he has helped us.
| A．that | B．before | C．when | D．who |
Here are two pairs of shoes, ______ you may choose.
| A．both of them | B．either of them | C．any of which | D．either of which |