Oceans, that cover about 70% of the Earth’s surface, contain approximately 97% of the Earth’s water supply.
Chọn đáp án A
_______ flower gets its smell from _______ oil that the plant produces.
Peter went _______ the man and asked him the best way to get _______ town.
Scientists have not been able to cure AIDS, _______ any vaccine against the disease.
National Parks are usually located in places where have been largely undeveloped, and are often with exceptional native animals, plants, and unusual geological features.