As soon as he heard the news, a(an) of surprise appeared on his face.
| A．condition | B．situation | C．function | D．expression |
When he left _____college ,he got a job as ______reporter in a newspaper office .
A. /, a B /, the C. a, the D. the,, the
The most important thing about cotton in history is ___part that it played in ____Industrial Revolution.
| A．/,/ | B．the,/ | C．the , the | D．a ,the |
While he was investigating ways to improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
| A．a ,/ | B．a ,the | C．/, the | D．the ,a |
It is ___world of wonders, _____world where anything can happen.
| A．a. the | B．a, a | C．the, a | D．/,/ |
The Wilsons live in ______A-shaped house near the coast . It is _______17th century cottage.
| A．the, / | B．an, the | C．/, the | D．an ,a |