Từ loại động từ – Ngữ pháp toefl itp P1

Neuropsychologist Marilyn Albert is looking beyond brain functions for answers the question “How do emotions and attitudes affect the process of aging?”

Demonstrations public are an effective means by which advocacy groups can bring inequalities to the attention of local, state and federal officials

The Appalachian Mountains formation a natural barrier between the eastern seaboard and the vast lowlands of the continental interior of North America.

Grassland vegetation reduces competition for water among species by concentrates roots at different levels.

In many areas of the world, people need clothing for protection the weather.