Invented inventions mixed mixture discovered discovery 1 The Chinese __________ gunpowder. 2 They found salts and __________ them. 3 The __________ exploded when it was heated. 4 The Chinese also __________ paper. 5 Paper was one of the most important __________ 6 The __________ of gunpowder helped the Chinese to make fireworks. Tick (✔) the correct sentence A or B. A 1 Let's go to the mall. 2 Shall we bought a CD? 3 How about sending her an email? 4 Shall she ask Mum? 5 How about to have a picnic? B How about go to the mall? Shall we buy a CD? Shall we sending her an email? Shall we ask Mum? How about having a picnic?