Unit 1 They set foot on England Unit 2 I felt on top of the world Unit 3 Our class took a field trip to Unit 4 I'm grateful to my mother Unit 5 Sweet and Low Unit 6 We felt like big birds booming around Unit 7 An email to Dora Unit 8 It's never safe to meddle with a monster Unit 9 Mille was the best child in the world Unit 10 East or west,home is best Unit 11 Atalanta was the fastest huntress in Greece Unit 12 Little poems on treasuring time Unit 13 Black clouds were hiding the sun Unit 14 Boats Sail on the Rivers Unit 15 The Mole was spring cleaning his little home Unit 16 Animal stamps Unit 17 The Sun's Travels Unit 18 Cantonese is a dialect of the Chinese language Unit 19 What a beautiful sight! Unit 20 The compass shows directions