giúp
----- Nội dung dịch tự động từ ảnh -----
B. available
environment.
C. harmful
WRITING
Rewrite the following sentences without changing their original meaning. Use the
given words.
31. We should reduce the use of fossil fuels. Examples of fossil fuels are coal and oil.
(LIKE)
32. Hydro energy requires dams, so it is expensive. (BECAUSE)
33. We should use public transport if we want to protect the environment. (TO)
Write complete sentences, using the words/ phrases given in the correct forms.
34. Nowadays / some people / countryside /use/biogas cookers.
35. Scientists / look for / alternative / sources / energy / replace / fossil fuels.