If you are not yet , you are forbidden to visit this site .
| A．eighteen years | B．at age of eighteen |
| C．eighteen – year-old | D．eighteen years of age |
We didn’t have much difficulty _______ the company.
| A．found | B．to find | C．in finding | D．find |
I'll never forget the day _________ I was born．
| A．when | B．that | C．on which | D．both A and C |
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 |