In the eighteenth century writers （　）hours in coffee houses, discussing the news of the day.

A:used to spending B:used to spend C:would be spending D:were used to spend

Jack was in the conference room (discussing) plans with (the other) committee members when the chairman (had called) to say (he'd be late).

A:discussing B:the other C:had called D:he'd be late

In the eighteenth century writers ______ hours in coffee houses, discussing the news of the day.

A:used to spending B:used to spend C:would be spending D:were used to spend

In this passage, the author is mainly discussing the function of ______. ( )

A:the human brain B:glands and systems in the body C:the cortex of the adrenal gland D:the medulla of the adrenal gland

Jack was in the conference room (discussing) plans with (the other) committee members when the chairman (had called) to say (he'd be late).

A:discussing B:the other C:had called D:he'd be late

The passage is mainly discussing ______.

A:the difference between general history and art history B:the making of' art history C:what we can learn from art D:the influence of artists on art history

Terms of shipment are( )，when discussing the terms of the contract．

A:compulsory B:importance C:major D:necessity