EX4: Chọn đáp án đúng 1. Did you see ................ man that I told you about? A. the B. a 2. Did you get ................ birthday card that I sent you? A. a B. the 3. He is ................ very good friend. A. the B. a 4. We ate ................ wonderful meal yesterday. A. a B. the 5. ................ meal that we ate yesterday was wonderful. A. the B. a 6. I have ................ test tomorrow morning. A. the B. a 7. Which shirt do you like? ................ blue one? A. the B. a 8. I have three shirts - a yellow one, an orange one, and .......... black one. A. the B. a 9. You must always tell ................ truth! A. a B. the 10. I cannot understand how ............ person like him can become president. A. a B. the giúp ạ giải thích rõ ràng đc ctlhn ạ