Give the past perfect form of the verb in brackets.
Cho dạng đúng của động từ trong ngoặc ở thì quá khứ hoàn thành.
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 Ho Chi Minh 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?
Loga
Sinh Học lớp 12
