I. Cho dạng đúng của động từ trong ngoặc để hoàn thành câu
4. They (be) …………………….…… co-workers for 15 years.
5. She will never forget (treat) …………………….….. well by her neighbors
II. Cho dạng đúng của từ trong ngoặc để hoàn thành câu
1. Friends of the Earth is concerned about the (conserve)……………. of the natural environment.
2. Scientists are looking for (effect) ……………………….. ways to reduce energy consumption.
3. One way to protect our environment from pollution is to reduce (waste) …………………. consumption.
4. English is one of the (compel) ……………………………. subjects for children in Vietnam.
5. My brother can sing Korean pop songs (beauty) ………………….