29.His humorous closing speech was a welcome addition to the ______dull meeting.
-- Why don't you ask Tom to do it?-- I don' t know whether he is______ to. He sometimes makes things worse.
-- Mum, could you buy me a dress like this? -- Certainly, we can buy _______one than this, but ________this.
-- Our holiday was _______. -- Yes, I’ve never had __________.
It is _______to work out this problem. You needn't go to the teacher.
-- The shop is ________ on Saturday and Monday. -- I see. I'll go here on Monday then.