8.Nam is keen on playing guitar in his free time. A.Nam loves to play guitar in his free time. B.Nam fancies to play guitar in his free time. C.Nam fond of playing guitar in his free time. D.Nam adore playing guitar in his free time

`-`Keen on + danh từ/ danh động từ `=` fond of (doing) something:

`-`Nam thích chơi guitar khi rảnh rỗi

. 9.Spending a lot of time in front of the computer is not good for your eyes. A.It not good for your eyes to spend a lot of time in front of the computer. B.It is not good for your eyes to spend a lot of time in front of the computer. C.It is not good for your eyes to spending a lot of time in front of the computer. D.It is not good for your eyes spending a lot of time in front of the computer.

`=>` it be (not) adj spend (ing) time N

`-` Việc bạn dành nhiều thời gian ngồi trước máy tính sẽ không tốt cho mắt.

10.Let's fly the kites on the pasture this afternoon. A.How about to fly the kites on the pasture this afternoon? B.How about flying the kites on the pasture this afternoon? C.What about flying the kites in the pasture this afternoon? D.Why don't we flying the kites on the pasture this afternoon?

`=>` đưa ra đề xuất, ý kiến của người nói.

`-` How about + N/V-ing?

8.C  Vì : keen on = fond of = interested in : thích , hứng thú với việc gì

9.D Dịch : Sẽ không tốt cho bạn khì ngồi trước máy tính với thời gian dài

10.B ( câu rủ : Let's + V = What about / How about + Ving = Why don't we +V )