As unemployment is very high nowadays , it’s very difficult for people to find work .
| A．the; 不填 | B．the ; a | C．不填；不填 | D．an; the |
—How long do you think it will be ________ we win the football World Cup?
—Perhaps twenty years.
| A．when | B．since | C．that | D．before |
Silk from China found its way to India, the Middle East and Rome, _______ spices and glass, which was not known to China.
| A．in exchange for | B．in return | C．in change for | D．in need of |
Li Yang, the founder of Crazy English, says that he copies it down _______ he comes to a sentence.
| A．unless | B．while | C．because | D．every time |
This is the third time I _______ Beijing. The second time I ______ here was on Christmas Day last year.
| A．have visited; came | B．have visited; have come |
| C．visited; came | D．visited; have come |
Computers can do a lot of things nowadays, but _____ more still need to be done by man.
| A．a large amount of | B．a great deal |
| C．a good many of | D．a great many |