The five rings on the Olympic flag ______ the five continents that are joined together in the Olympic Games.
| A．belong to | B．stand for | C．take apart | D．pack up |
Although the number of competitors ___ limited, a number of our classmates ___ eager to take part in it.
| A．are; are | B．are; is | C．is; are | D．is; is |
We don’t need to do __ extra work this evening. The day’s work was almost at __ end now.
| A．/ ; an | B．an; an | C．the; the | D．the; / |
It is in Qingdao ___ you’re going to pay a visit to ____ this kind of washing machine is produced.
| A．/; that | B．where; which | C．/; where | D．that; which |
Luckily, the poor boy had enough money _____ he could buy a train ticket.
| A．by which | B．on which | C．with which | D．for which |
________, it began to rain unexpectedly.
| A．While cleaning the machine |
| B．To clean the machine |
| C．He was cleaning the machine |
| D．While he was cleaning the machine |