1. There (not/ be).................. many high- rise buildings in Ha Noi before 1990 2. Goalkeeper Bui Tien Dung (have).................. different manual labour jobs before he became a professional football player 3. Few people (ride)................ motorbikes in HCM city before 1983 4. I got a high mark in English because I (study) ................... hard before the exam 5. How long (you/learn)...................English before you travelled to the U.S?
2 câu trả lời
1. hadn't been
2. had had
3. had ridden
4.had studied
5. had you been learning
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