It took Jane a whole hour to （) this algebra problem.

It’s time we ____some measures to solve this problem.A、must takeB、will takeC、tookD、have

It _____ us an hour to find out who saved the child.A、costB、spentC、paidD、took

It took him half an hour to finish the work.（英译中)

It took me two hours to figure out how to do it.A．guessB．sum upC．understandD．summarize

This problem is very difficult to deal with. It’s really_______.A、convincingB、seriousC、t

It is time the organization took some (?) measures to solve the traffic problem.