$\text{⇒ Answer:}$
$\text{Bài tâp 1:}$
$\text{a) the weather is rather cold.}$
$\text{b) so.}$
$\text{c) because.}$
$\text{Bài tập 2:}$
$\text{a) I can't go out because it's raining.}$
$\text{b) There was fog, so their flight was delayed.}$
$\text{c) I could't do this exercise so I asked Tom for help.}$
$\text{Cho anh xin câu trả lời hay nhất nhé, please ~}$