16.16. We (go) will go on holiday if there is time

→→ There is time ⇒⇒ TLĐ dùng Will + V ( nguyên mẫu )

17.17.  If we (need) need some help, we will ask

→→ Câu Điều kiện loại 1 ⇒⇒ giữ nguyên

18.18. She can ( speak ) speak English very well.

→→ giữ nguyên

19.19. Next year, my sister ( be ) will be a teacher.

→→ Next ⇒⇒ TLĐ dùng will + V ( Nguyên mẫu )

20.20. Children shouldn't ( buy ) buy fire work at Tet holiday.

→→ giữ nguyên