－How long ________ each other before they ________ married?

－For about a year.

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A．have they known; get

B．did they know; get

C．did they know; were going to know

D．had they known; got

The price ________, but I doubt whether it will remain so.

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In this experiment, they are woken up several times during the night, and asked to report what they ________.

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A．had just been dreaming

B．are just dreaming

C．have just been dreaming

D．had just dreamt

She ________ to the office than she got down to writing the report.

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－Look at the black clouds. It ________ soon.

－Sure. If only we ________ out.

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A．is raining; didn't come

B．is to rain; won't start

C．will rain; haven't started

D．is going to rain; hadn't come

The children ________ very quiet; I wonder what they ________ up to.

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Jim talked for about half an hour yesterday. Never ________ him talk so much.

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－________ Betty this morning?

－Not yet, but she is sure to be here before noon.

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All but one ________ take part in the conference ________ tomorrow.

[　　]

A．is going to; that is to take place

B．are going to; that is about to take place

C．are going to; that is to be taken place

D．are going to; which is to be held

－Is Tom still smoking?

－No, by next Saturday he ________ for a whole month without smoking a single cigarrette.

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