Can anyone help me? Thank so much. Exercise 5. Identify the one underlined word or phrase that must be changed to make the sentence correct. 1. If(A) someone came(B) into the store, smile (C) and say, “May (D) I help you?” 2. If(A) you do not understand(B) what were written (C) in the book, you could ask (D) Mr. Pike. 3. If(A) there isn’t(B) enough food (C), we couldn’t continue (D) our journey. 4. If(A) anyone will phone(B), tell (C) them I’ll be (D) back at 11:00. 5. I will come(A) to meet Mr. Pike and tell him about(B) your problems if (C) you didn’t solve (D) them.

`1` came `->` comes

`-` Câu điều kiện loại 1 - vế sau có may 

`-` If + S + V(s/es) + O , S + will/can/may + V-inf + O 

`-` Someone là chủ ngữ số ít `->` chia V(s/es) 

`2` do not understand `->` did not understand

`-` Câu điều kiện loại 2 - vế sau có could

`-` If + S + Ved/V2 + O , S + would/could/might + V-inf + O 

`3` coudn't continue `->` can's continue

`-` Câu điều kiện loại 1 - vế trước chia HTĐ 

`-` If + S + V(s/es) + O , S + will/can/may + V-inf + O 

`4` will phone `->` phones

`-` Câu điều kiện loại 1 - vế sau chia Tương Lai Đơn 

`-` if + S + V(s/es) + O , S + will/can/may + V-inf + O 

`5` didn't solve `->` don't solve

`-` Câu điều kiện loại 1 - vế trước có will 

`-` If + S + V(s/es) + O , S + will/can/may + V-inf + O