Câu hỏi:

Choose the letter A, B, C or D to complete the sentences

Question:They are using leaves __________ food.

Choose the letter A, B, C or D to complete the sentences

Question: If we continue to deforest, our earth ___________ polluted.

Choose the letter A, B, C or D to complete the sentences

Question:We ___________ a survey to know more about recycling.

Choose the letter A, B, C or D to complete the sentences

Question:Do you know what ___________ water pollution?

Choose the letter A, B, C or D to complete the sentences

Question:If students recycle and use recycled materials, they will save _________.

Choose the letter A, B, C or D to complete the sentences

Question:They use ________ plastic bottles to keep water.

Choose the letter A, B, C or D to complete the sentences

Question: We can find noise pollution __________ most cities.