the river is too dirty for us to swim in
--> since
why don't we collect waste paper to recycle ?
---> i suggest that waste paper
work hard of you fail
--> if
let's you pulic buses instead of motorbikes
--> how
although peter was tired , he still finished his assignment
--> despite
the fact that i don't meet her worries her
--> she is
Loga
Sinh Học lớp 12
