Viết lại câu sao nghĩa không đổi: 3. It has been over two years since she worked here. => The last time 13. The poem is short, but many students can't leam it by heart. => Even though 14.I bought this air-conditioner because it consumes less electricity than the others. => This air-conditioner 19. The policeman said to Mary, "Could you show me your driving license, please?" => The policeman told Mn giúp em vs em cần gấp Em cảm ơn

`Đáp` `án:`

3. The last time she worked here was over two years ago.

The last time + S+ V2/ed + was + time + ago

→ It is / has been + time + since + S+ (last) + V2/ed 

4. Even though the poem is short, many students can't learn it by heart.

Even though+ clause, clause: mặc dù 

5. This air-conditioner was bought because it consumes less electricity than the others.

S + was/were + V3/ed + (by O): bị động - QKĐ

6. The policeman told Mary to show him her driving license.

S + told + O + to V: tường thuật - dạng mệnh lệnh / yêu cầu