The rain forests in this area _______ smaller.

I thought I was going to fail the exam, but I passed ______ .[ ]

She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live in.

I’m sorry that John is out.—Please ask him to call me as soon as he ____.

_____but he still couldn’t understand the logical connection of the two subjects