I.Change these sentences into reported speech 1." Who thinks there is life in Mars? ", my mother asked ➜My mother asked.............................. 2." I think aliens have very big heads and triangle faces ", Sally said ➜Sally thought...................................... 3." The Martians may travel in flying saucers ", Tom answered Jerry ➜Tom thought.................................... 4." I believe scientists have found ways to travel to the Moon ", Tom said ➜Tom believed..................................... II.Choose the correct answer for each sentence 1.It_______that the thinning of the ozone layer_________by smoke from mills,factories and industry A.believes/causes B.is believed/causes C.believes/is caused D.is believed/is caused 2.All flights to Ha Noi had to be cancelled__________the storm A.as a result B.due to C.because D.so 3.The first Thanksgiving_________by the Pilgrims in 1621 A.celebrated B.was celebrated C.is celebrated D.has been celebrated 4.There_______be life in other planets,but I can't be sure A.should B.might C.will D.must 5.John asked_______I wanted to leave on the Moon A.what B.how C.whether D.who 6.Can you tell me__________? A.how many planets orbiting the Sun B.how many planets orbit the Sun C.do how many planets orbit the Sun D.how many planets do orbit the Sun