______ is known to the world, Mark Twain is a great American writer.
A. That
B. Which
C. As
D. It
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______ he works hard, I don’t find when he finishes the experiment.
As soon as B. As well as
B. C. So long as
C. D. So far as
Some companies have introduced flexible working time with less emphasis on pressure ______
A. than more on efficiency
B. than efficiency
C. and more on efficiency
D. and more than efficiency
I was advised to arrange for insurance ______ I needed medical treatment.
A. nevertheless B. although
B. C. in case
C. D. so that
Only by shouting at the top of her voice ______.
A. she was able to make herself hear
B. was she able to make herself hear
C. she was able to make herself heard
D. was she able to make herself heard