1. There are 22 badminton competitors taking part in the tournament. COMPETE (competitor : đối thủ, ở đây dùng số nhiều.)

2. Energy is used to product a lot of electrical things  PRODUCT (sth/sb + be + used to + V.)

3. Photography is the art or taking and processing photographs. PHOTOGRAPH (photography :nhiếp ảnh.)

4. Waves will be used as an environmental friendly source of energy. ENVIRONMENT ( ở đây dùng tính từ.)

5. I think that good knowledge of arts and music is a necessity for anyone. NECESSARY (ở đây dùng danh từ.)

@hawan22 học tốt

1. There are 22 badminton competitors taking part in the tournament. COMPETE (competitor : đối thủ, ở đây dùng số nhiều.)

2. Energy is used to produce a lot of electrical things  PRODUCT (sth/sb + be + used to + V.)

3. Photography is the art of taking and processing photographs. PHOTOGRAPH (photography :nhiếp ảnh.)

4. Waves will be used as an environmentally friendly source of energy. ENVIRONMENT ( ở đây dùng tính từ.)

5. I think that good knowledge of arts and music is a necessity for anyone. NECESSARY (ở đây dùng danh từ.)