English is learned by millions of students because it is important

1 English is learned by millions of students because it is important.
Đáp án: Because of...........................................
2 I catch cold now because of going out in the rain yesterday.
Đáp án: Because.............................................
3 Because of his wife’s being there, I said nothing about it.
Đáp án: Because..........................................
Cần gấpp hứa tặng 5 sao và chấm điểm cho ai làm nhanh ạ ( đúg và đủ nx )