`11`. Although Colin spoke English quickly, we could understand him.
`->` Although + S + V: mặc dù
`12`. The children were tired, so their mother knew they were doing something
`->` so + S + V : vì vậy `=>` mệnh đề chỉ kết quả
`13`. Because Lan was sick, she didn't go to school.
`->` Because + S + V: bởi vì `=>` mệnh đề chỉ nguyên nhân
`14`. My sister is fond of watching cartoons.
`->` like + N/Ving = be fond of + N/Ving
`15`. Are you interested in physics?
`->` like + N/Ving = be interested in + N/Ving