It is necessary to explain your theory _____, otherwise the audience won't make sense of what you are trying to get across.
Some people always take seriously the ______ of the complete globe end in the near future.
— Did you visit the museum today? — No. We ______ it, but we spent too much time shopping.
I am going to do ______ I can ______ him a good impression.
Some of the doctors are paid almost ______ as the nurses.
The killer was caught at a pub ______ he was surfing the net, ______ relaxed us all.