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They have hardly seen a real plane so far, ________?

[　　]

________ is the population of that city?

[　　]

________ do you clean the floor of your bedroom?

Once a week.

[　　]

________ does Lin Feng usually clean the floor of his own bed-room?

Once a week.

[　　]

Miss Li wants to know ________ next week.

[　　]

You must tell him about that news ________.

[　　]

We ________ think he can ________ teach us Japanese.

[　　]

The youth today must ________ speak some English in order to do their work easily .

[　　]

Here is a telephone message from Mr. Li for ________.

[　　]

The poor woman ________ a cold winter morning . She has ________ for many years .

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