If you don’t pay ____ to the signs, you might have trouble finding my house.
| A．look |
| B．watch |
| C．attention |
| D．visit |
For a long time they walked without saying ___word . Jim was the first t break _____silence.
| A．the, a | B．a ,the | C．a ,/ | D．the,/ |
Tom owns ______larger collection of ______books than any other student in our class.
| A．the ,/ | B．a,/ | C．a ,the | D．/, the |
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