The task is so hard fore . I don’t know _______________.
–Why didn’t you answer my phone last night?–I ______ on my way home.
He is always making ______ for his being late ______ school.
______ you have nothing important to do, why not come with me to the cinema?
I think ______ necessary ______ to take more exercise.
What did your mother do ______ the market last Sunday?