We need to put safeguards ______ to prevent this type of accident occurring again

You won’t mind me _________ some photos here， will you— ___________. You can just enjoy them with your eyes， I think.

.They ___ out because the light’s on. Let’s go upstairs and have a look.

International situation is currently undergoing great changes ________ UNESCO plays an irreplaceable role in promoting international cooperation.

153 — How did you know that I won — Ijust from the look on your face I am notso sureguessed