Bài 9: Choose the letter A, B, C or D to indicate the underlined part that needs correction.
1. If we (A) have time (B) in the weekend, we (C) will come (D) to see you.
2. If I (A) am you, I would (B) follow (C) his (D) advice.
3. He can (A) pass (B) the exam if he (C) studied (D) hard.
4. What (A) do you (B) do if you won (C) the first prize of (D) the lottery?
5. Would people (A) be able (B) to fly, if they (C) have feathers (D) instead of hair?