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23. With Shanghai World Expo drawing near, volunteers are making use of every minute to _______ their foreign language because language volunteers must pass a written test and an   interview.

30. What the young man can’ t ___________ is that his mum always treats him like a baby.?

--- How is Dennis getting along with his work?
--- Well, he could always _______ a new idea for increasing sales.

When he came to the door, my father ___ him at once although he was now a very old man.

-- The classroom looks like a mess!
-- Yes, but who left the waste paper ______ around?

Honey, stay outside and ______ a few minutes; then we'll go to church together.

31．—What’s the matter with Christine?
—A letter from her parents in California________an attack of homesickness.

Internet shopping is really _____________ when people are sure of its safety and security.?

What the young man can’ t ___________ is that his mum always treats him like a baby.

23．In view of lacking preparations for the competition and not wanting to lose face, Johnson eventually decided to _____．