If we work hard with a strong will, we _____ overcome any difficulty, however great it is．

(2011·北京高考)—Where are the children? The dinner's going to be completely ruined.—I wish they______always late.

Remind him that you’re always there for him, __________ this on purpose?

I ________ through that bitter period without your generous help.

Water ____ be changed into vapour but it ____ be heated to its boiling point .