Somenewoilfieldssince1976.A．we

Some new oilfields ________ since 1976.

A．were opened up	B．will be opened up
C．have opened up	D．have been opened up

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Where on earth have you been? We you back much earlier.

A．were expecting

B．are expecting

C．had expected

D．expect

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He works in a factory now, but he on a farm for 20 years.

A．worked

B．has worked

C．had worked

D．had been working

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Glad to see you back. How long in Russia?

A．did you stay

B．have you stayed

C．were you staying

D．have you been staying

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---Have you decided already?
---Yes, I at once.

A．have decided

B．decided

C．will decide

D．had decided

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--I’ve bought a box of chocolates for our daughter.
---Oh, how good a dad! But she doesn’t like sweet things, that?

A．Don’t you know	B．Haven’t you known
C．Didn’t you know	D．Hadn’t you known

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