Question

[Lê Hữu Thắng]

1. The air in this industrial area is ....... polltued (BAD)

2. Thanks to the ........ of the computer, our life (invent)

3. This book is useful because it is ......... (inform)

4. How do you ......... your speaking skill (improvement)

Answer 1

[Minh Nguyệt]

1. badly

2. invention

3. informative

4. improve