quien is singular and quienes is plural (sorry i didn’t spell it right i couldn’t figure out how to place accents)
Levanta
presta means to lend, habla means to speak, estudia means to study, levanta means to raise, or lift.
1 c
2 a
3 b
4 d
5 d
6 b
7a
8b
9 c
10 c
11 d
12 d
13b
14 a
15 a
16 d
17 b
18 b
19 d
20 b
I believe descubrámoslas is correct