He ______. It's a shame my mobile phone was power-off.
| A．ought to call me | B．could have called me |
| C．may be calling me | D．might call me |
The Wilsons live in ______A-shaped house near the coast . It is _______17th century cottage.
the, / B. an, the C. /, the D. an ,a
It is ___world of wonders, _____world where anything can happen.
| A．a. the | B．a, a | C．the, a | D．/,/ |
While he was investigating ways to improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
a ,/ B. a ,the C. /, the D. the ,a
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 |
When he left _____college ,he got a job as ______reporter in a newspaper office .
A. /, a B /, the C. a, the D. the,, the