John as well as the other staff members who ______ working with this world-famous company ______ to attend its 100th anniversary.
| A．is… is | B．is… are | C．are… is | D．are… are |
35. Clearly, in a system ______ every decision is made on the basis of tradition alone, it may be difficult to achieve progress.
| A．that | B．when | C．where | D．which |
34. It’s reported that in the past 50 years around 80 percent of Beijing’s courtyard houses ______.
| A．had wiped out | B．have wiped out |
| C．had been wiped out | D．have been wiped out |
33. If I_________you would drop in, I would have stayed home waiting for you.
| A．have known | B．knew | C．would know | D．had known |
32. ––When will you be back, Peter?
––________a couple of days.
| A．On | B．In | C．For | D．By |
31. All books ______ to the library more than three days late will be subject to a fine.
| A．return | B．returning | C．to return | D．Returned |