----- Nội dung dịch tự động từ ảnh ----- 8. Find the word which has a different sound in the underlined part. 9 1. A. surf B. roof C. of D. father 2. A. laugh B. though C. cough D. enough 3. A. machine B. chemical C. Christmas D. backache bo lu 4. A. chin B. architect C. mechanic D. headache 5. A. rough B. fast C. although D. ferry Put the words into the correct column according to the underlined part. wife wives of live enough victory /f/ vain laugh cough paragraph invention rough /v/