Một bể chứa đầy nước, sau khi dùng hết 350lít nước thì trong bể còn lại một lượng nước bằng 13/20 dung tích bể. Hỏi bể chứa được bao nhiêu lít nước?

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Choose the best option to complete the following sentences. 1. Jean Fragonard was a French artist ______ portrait of children. a. whose paintings b. who has painted c. who painted d. whose painted 2. Wild animals ______ in their natural habitat will have a better and longer life than those which are kept in protected areas. a. which lives b. to live c. living d. Both a and c 3. She lives in the house ______. a. which has the red door b. who has the red door c. that with the red door d. with its red door 4. The students ______ noise in class will be punished. a. making b. to make c. Both a and d d. who make 5. Completed in 1756, Nassau Hall is the oldest building now ______ on the campus of Princeton University. a. standing b. which stands c. has stood d. Both a and b 6. Neil Armstrong, the first person ______ foot on the moon, reported that the surface was fine and powdery. a. to set b. who setting c. setting d. set 7. The house ______ in 1798 was the most distinguished building in this area at that time. a. completing b. which was completed c. completed d. Both b and c 8. He was the last athlete ______ part in the competition in the morning. a. who takes b. to take c. taking d. Both a and c 9. Our solar system is in a galaxy__ the Milky Way. a. calling b. called c. which is calling d. which called 10. Perhaps solar energy is the best fuel ______ to make electricity. a. is used b. using c. to use d. to be used 11. Dienbienphu _____ by a lot of tourists both at home and abroad is in the North – West of Vietnam. a. which visit b. which is visited c. to be visited d. visiting 12. The man _____ to the policeman has just returned home from Paris. a. talking b. to talk c. who talked d. talked