Many people are not fully aware of the damage that it does to their health. This is ____ we chose this picture as our logo.

Henry VII set a standard for ______ people were to speak English.

It doesn’t matter ________ you pay by cash or credit card in this store.

To improve the quality of our products ,we  asks  for suggestions      had  used  the products.

The overseas Chinese scientist made another wonderful discovery, ___________ of great value to study AIDS.