______has helped to save the drowning boy is worth praising.
For a long time they walked without saying ___word . Jim was the first t break _____silence.
Tom owns ______larger collection of ______books than any other student in our class.
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.
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