I will give you my friend’s address where I can be________if you have any problem. [ ]

Must I return the book this week— No, you ____________. You can ____________ it for 20 days.

Unfortunately, the research was limited __________increasing economic profits, _________ protecting the environment.

It’s ten years since the scientist ___on his life’s work of discovering the valuable chemical.

ou visit the museum today —No. We _____ it, but we spent too much time shopping.