ter studied hard at school when she was young, which contributes ________ her success in her career.

What else do you think we should pay attention _________ our environment—- Sorry, I’ve no idea.

________ has already been pointed out, only by correcting mistakes can you make progress

It is only by practising English for several hours every day _________ be able to use it freely.

Mr. Barkley, if you say this was not a(n ) _________ robbery (抢劫), how can you explain the masks and gloves found in your backpack?— Well, uh…, that’s a long story…[ ]