Once we discover a mistake, we should not ________ it but correct it immediately, to create better conditions for economic development. [ ]

1He will send me an e-mailas soon as he _____ in America.

_______ Millie _______ music — No, I don’t think so.

When the teacher came in, he saw some boys _______behind Daniel, _______ the computer games.

Can you remember this park We ___________ here.—Sure. But now I _______ in that swimming pool.