HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
10 d
11 c
12 a
13 b
5 c
6a
7c
8b
9a
1b
2c
3d
4d
16 keep
17 were laying
18 would buy
19 had seen
20 sit
1 yes
2 her parents
3 by bus
4 no
5 at half past nine
a