I
4 D
5 C
II
1 A
4 C
5 B
6 A
7 A
8 D
9 D
10 B
III
1 D => to do
2 A => strong enough
3 D => I liked
4 B =>going
5 A => which
IV
a) [ko thấy đề]
b) [ko thấy đề]
c) wrote -haven't received
d) stay
e) teaching - to do
f) is being built - will live
V
1 parts
2 because
3 necessary