41-42 . They (come) ……………back home late yesterday after they (finish) ……………their work.
43. Two houses (build) ……………………….……in the city every years.
44. Vietnam’s Independence Day ……………..……… (celebrate) on September 09th.
45. If you (be) ………………………the president, what would you do to help the environment ?
46.The Statue of Liberty in New York is a monument which (symbolize) __________ freedom.
47.There are about 750 million English speakers in the world, and this number ( increase) ______________fast.
48. Factories (not dump) _____________waste into rivers if the government fines them heavily.
49. The kangaroo (become) _____________ a symbol of Australia since 1973.
50.If there were more trees in this area, the air ( be) _____________ fresher.
41-42 . They (come) ……came………back home late yesterday after they (finish) …had finished…………their work.
43. Two houses (build) …………are built…………….……in the city every years.
44. Vietnam’s Independence Day ……….is celebrated……..……… (celebrate) on September 09th.
45. If you (be) ………were………………the president, what would you do to help the environment ?
46.The Statue of Liberty in New York is a monument which (symbolize) ____symbolizes______ freedom.
47.There are about 750 million English speakers in the world, and this number ( increase) _____is increasing_________fast.
48. Factories (not dump) _____won’t dump________waste into rivers if the government fines them heavily.
49. The kangaroo (become) _______has become______ a symbol of Australia since 1973.
50.If there were more trees in this area, the air ( be) ____would be_________ fresher.