Marque a opção em que a frase abaixo es está corretamente escrita no passado na for- m ma negativa:
They kissed a girl.
a)They kisses a girl.
b) They not kissed a girl.
c) They did not kiss a girl.

Hi mom, good morning. (hi mom - oi mamãe good morning - bom dia)

Éuma regra gramatical.
usa-se does na terceira pessoa do singular nas frases afirmativas e doesn't na terceira pessoa do singular nas frases negativas.

1 – first
2 – second
3 – third
4 – fourth
5 – fifth
6 – sixth
7 – seventh
8 – eighth
9 – ninth
10 – tenth
11 – eleventh
12 – twelfth
13 – thirteenth
14 – fourteenth
15 – fifteenth
16 – sixteenth
17 – seventeenth
18 – eighteenth
19 – nineteenth
20 – twentieth
21 – twenty-first
22 – twenty-second
23 – twenty-third
24 – twenty-fourth

espero ter te ! : )