1 up
2 family tree
3 talk with someone
4 There are many students in the classroom. Some are talking, while others are reading.
5 knows
6 practice pronunciation
7 Writing exercise
8 then
9 work to do
10friends to talk to
11friendship broke up
12in an enthusiastic way
13What is difficult to
14They decide that they aren't scared to speak English in class
15Teacher in charge
16make someone disappointed
17without permission
18ranked in the top
19having experience doing something
20bring up suggestions
21fell down from the upper floor
22avoid someone and hide some thigns
23I should do this work, not you.
24paid; for
25paid; for/to buy
26judging by circumstance