North Korea threatens to ________ from six-party talksaimed at ending North Korea’s nuclear program unless its proper rights are tobe satisfied．

1 doubt if he ___________ in the discussion tonight.—I believe if he ____________his homework, he will join us.

What a naughty boy he was.—_______.

Without my glasses, I couldn’t _____ whether that figure on the blackboard was a three or an eight.

She is so optimistic that her cheerfulspirits and bubbling laughter _____ the whole class.