Most of the evidence was destroyed in the fire ____, it would be almost impossible to prove his guilty [ ]

I’m afraid you ________play basketball here.— I’m sorry I won’t.

Allen, please tell me what you are going to be when you grow up.—To be______ engineer just like you.

Friendship among the nations will _______the economic development of the region.

Do you know ________—Let me see. I remember it was on March 18th.