—I don’t know when ______ tomorrow.—I will call you as soon as he ______.
English is not easy, but I never __________.
---Your help made __________ for me to work out this problem.
---I don’t think _______ Maths is easy.
---Thanks for _________ the new chairperson.
--- He couldn’t hide his __________ at my success and said bad words about it.