Изберите верный вариант:1) She made a mistake... she was careless.a) becauseb)

Изберите верный вариант:
1) She мейд a mistake... she was careless.
a) because
b) because of
2) She мейд a mistake... being careless.
a) because
b) because of
3) We couldn't come on time... the rain.
a) because
b) because of
4) We couldn't come on time... the rain had not stopped.
a) because
b) because of