1．Email，as well as telephones，is playing (play) an important part in daily communication now.
2．If nothing is done (do) about the pollution, then we'll have no place to live.
3．All students to this country are treated (treat) with kindness.
4．(福建卷)To my delight, I was chosen (choose) from hundreds of applicants to attend the opening ceremony.
5．(2016·全国卷Ⅰ)Leaving the less important things until tomorrow is (be) often acceptable.
6．Either you or I am (be) going to visit the exhibition this summer.
7．One third of the area has been affected (affect) by the severe drought in the past two months.
8．The writer, whose books sell (sell) well, has been invited to attend the book signing to be held next week.
9．Many a page of this book is (be) of no value.
10．Reading English papers and magazines is (be) helpful to our study of English.
