00:10duration 10 seconds
Chapter 10 Lesson 3 Exercise 1
00:07duration 7 seconds
Chapter 10 Lesson 3 Exercise 4
04:38duration 4 minutes 38 seconds
Chapter 10 Lesson 3 Exercise 11
00:08duration 8 seconds
Chapter 10 Lesson 3 Exercise 12
00:15duration 15 seconds
Chapter 10 Lesson 2 Exercise 1
01:06duration 1 minute 6 seconds
Chapter 10 Lesson 2 Exercise 3
00:38duration 38 seconds
Chapter 10 Lesson 2 Exercise 9
00:11duration 11 seconds
Chapter 10 Lesson 1 Exercise 1
00:17duration 17 seconds
Chapter 10 Lesson 1 Exercise 3
00:12duration 12 seconds
Chapter 10 Lesson 1 Exercise 9
00:14duration 14 seconds
Chapter 10 Lesson 1 Exercise 17
00:09duration 9 seconds
Chapter 9 Lesson 3 Exercise 1
00:54duration 54 seconds
Chapter 9 Lesson 3 Exercise 5
00:20duration 20 seconds
Chapter 9 Lesson 2 Exercise 1
00:27duration 27 seconds
Chapter 9 Lesson 2 Exercise 10
00:24duration 24 seconds
Chapter 9 Lesson 1 Exercise 1
00:44duration 44 seconds
Chapter 9 Lesson 1 Exercise 2
00:37duration 37 seconds
Chapter 9 Lesson 1 Exercise 5
Chapter 9 Lesson 1 Exercise 6
Chapter 8 Lesson 3 Exercise 1
00:33duration 33 seconds
Chapter 8 Lesson 3 Exercise 4
Chapter 8 Lesson 3 Exercise 6
00:23duration 23 seconds
Chapter 8 Lesson 2 Exercise 5
Chapter 8 Lesson 2 Exercise 6
Chapter 8 Lesson 2 Exercise 7