Penicillin was then produced ________ in order to meet the demands of the armies.
A．in large amounts B． in large plenty
C．in large quantities D． in large number
A study ________ in the U.S.A. in 1977 showed that the chemical ASA in aspirin could prevent a stroke.
A. carrying out B. carried out C. working out D. worked out
—Let's go Dutch for this supper, OK?
—No，________this time, as a reward for all your help.
A．it's up to you B．it's my treat
C．let's talk about it D．it doesn't matter
At the United Nations Climate Change Conference, the UN Secretary General points out that，________， the climate situation will get worse and worse.
A．if not dealing with properly
B．unless dealing with properly
C．if properly dealt with
D．unless properly dealt with
—Who should be responsible for the accident?
—The boss, not the workers. They just carry the orders________.
A．as told B．as are told
C．as telling D．as they told
I can't thank you _______ much because without your help I _______ have won the first prize.
A．too; wouldn't B．very; shouldn't
C．that; might not D．so; couldn't
