_______environmental damage is done, it takes many years for the ecosystem to recover.
—How can I get more information about your products?—_____ to call the sales office or visit our website.
---May I borrow your book Steve Jobs ? --- ________ you return it before Friday.
---Shall I give you a ride since you live so far away? ---Thank you. ____.
E-mail, as well as telephones, _______an important part in our daily communication.
If you make every effort, your dream will ____, and this ____ all the people.