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EXERCISE 1:
1. If we (A) have HTD time (B) on this weekend, we (C) will come TLD (D) to see you.
2. (A) If we had (B) known QKHT (C) that you were in hospital, we (D) would visit you.
3. If I had (A) knew (B) his address, I (C) would (D) have told you.
4. If I (A) am you, I (B) would (C) follow (D) his advice.
5. He can (A) pass (B) the exam if he (C) studied (D) hard.
GIÚP MÌNH VỚI Ạ MÌNH CAMON NHÌU :))