Giúp mình với nhé
11c. in
12d. at
13a. in
15c. about
17d. with
5b 8c 12d 13c 15c 17d 18d 20c 21b
1b. best
2a, of
3a. for
4a. about
5b. from
6c. to
7d
8c later
9a near
10b. during