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【題目】____ back, few could have predicted “.com” would become one of the biggest cultural touchstones (試金石) of the century.

【題目】—What do you think of teaching?

【題目】How long do you think it will be ________ the computer company brings out a new product?

【題目】It was a good concert – I enjoyed the last song ________.

【題目】It's not my________ she didn't come!

【題目】It’s the management rule of the hotel that payment ________ be made by check instead of in cash.

【題目】Few people can ________ without water for more than a week.

【題目】________ with his sisters, Jerry is even more sensitive to emotional and relationship problems.

【題目】I don't think we should _______ our business in the present economic climate.

【題目】I’d rather stay at home watching the football match ________ on TV tonight than go out with you.