— When shall we go to the museum, today or tomorrow? —              are OK.

We’ll never forget this terrible accident and the damage_______has caused to the area.

When you are reading fast，your eyes will be one or two word groups ahead of______ your mind is taking in.

________ is impossible for us to offer him any help.

To know more about Japan's recent claims about Diaoyu Islands,  you can use the Internet or watch CCTV news, or     ．