‘I’____the first letter in the word‘irregular’,and there is___‘u’and ___‘l’in it.

Two bottles of apple juice, please. — Only one bottle is left. Would you like to have ___________, sir?

―How soon ________ your brother ________ back from Guangzhou?―In two weeks.

I wondered _____ they always looked down upon me.

His problem is more difficult________ that one. [ ]