It’s careless ________ him to make the same mistake again. I think it important ________ him to be more careful next time.

What an unforgettable experience! I’ll write it down______it is till fresh in mymemory.

Had we assisted him , he ________ us a hand ________ today .

Do you have_______ in mind that you’d like for supper— Well， _______ is OK with me.

They spent _________time ___________ the computer games.