`7, A.` `\text{though → in spite of / despite}`

`+` Though / Even though / Although + S + V

`=` In spite of / Despite + N/N phrase/Ving: mặc dù ...

`⇒` The high salary from their company `→` là N phrase `→` In spite of / despite

`8, C.` `\text{but → bỏ}`

`+` Cấu trúc:

Although / though / even though + S + V, S + V: mặc dù ..., ... (không có 2 quan hệ từ trong 1 câu)

`9, C.` `\text{because of → because / as / since}`

`+` Because / As / Since + mệnh đề (S + V)

`=` Because of + N / N phrase / Ving: vì ...

`⇒` My courses are diffcult  `→` Mệnh đề `→` Because / as / since

`10, A.` `\text{because of → because / as / since}`

`+` Tương tự câu 9

`⇒` My country is located in a sub-tropical area `→` Mệnh đề `→` Because / as / since