..advertisementsareofgreathelp

.
. _________advertisements are of great help, I don’t think we should entirely rely on them.

A．Since

B．While

C．Once

D．As

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This new-type machine____________ little room.

A．takes up

B．is taken up

C．has been taken up

D．is taking up

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--You don't look so well, Mary. What's the matter with you?
　　--Why?___________.

A．I'm not myself

B．Fine, think you

C．I felt bad

D．I'm quite myself

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China has hundreds of islands, ___________ is Taiwan Island.

A．among them the largest	B．and the largest of which
C．and the largest of them	D．but in which the largest

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Be quiet！Our teacher has _________ to tell us.

A．important anything	B．something important
C．important something	D．anything important

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Nearly________ of the surface of our planet is covered by water.

A．seven-ten

B．seven-tenth

C．seventh-ten

D．seven-tenths

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