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12. Having retired from work, ____
A. social work interesrts him
B. it is possible for him to engage in social work
C. Mr Brown devotes all his time to social work
D. his interest is social work
13. ____ Ann by phone, James decided to email her
A. Having failed to contact
B. having failed contacting
C. He failed to contact
D. That he failed to contact
14. ____ with Uranium ore, Marie Curie discovered two elements, radium and polonium
A. While being worked
B. while working
C. Since working
D. having worked
15. Nam defeated the former champion in three sets. He finally won the inter-school table tennis championship
A. Having defeated the former champion in the inter-school table tennis, Nam did not hold the title of champion
B. Although Nam defeated the former champion in three sets, he did not win the title of the inter-school table tennis champion
C. Having defeated the former champion in three sets, Nam won the inter-school table tennis championship
D. Being defeated by the former champion, Nam lost the chance to play the final game of inter-school table tennis champion
1. While all birds are alike in that they have feathers and lay eggs, ___great differences among them in terms of size, structure, and color.
a. to be
b. but are
c. if there are
d. there are
2. Not only___places of beauty, they serve scientific and educational purposes as well.
a. are botanical gardens
b. botanical gardens to be
c. botanical gardens are
d. to be botanical gardens
3. ___are a form of carbon has been known since the late eighteenth century.
a. Diamonds
b. because diamonds
c. diamonds, which
d. that diamonds
4. Designed by Frederic Auguste Bartholde,___.
a. the United States was given the Statue of Liberty by the people of France
b. The people of France gave the Statue of Liberty to the United States.
c. the Statue of Liberty was given to the United States by the people of France.
d. the Franch people presented the United States with a gift, the Statue of liberty.
5. If you want to catch the last train, it's time you (leave).
a. had left
b. left
c. are leaving
d. should leave
6. We can't consider (buy) a new house before (sell) the old one.
a. buying-selling
b. to buy-selling
c. buying-having sold
d. Both A and B are correct
of all time: mọi thời đại
narrowly defeated: bị đánh bại một cách sát nút