______ is necessary for everyone to obey the traffic rules.
They gave me so much help, without ____ I couldn't have succeeded last year.
Jenny worked hard before the final examination, and ____.She got an A.A.took off B.showed off C.put off D.paid off
When designing your house, you'd better ____ land for a garden.
--- I think George doesn't really care for TV plays. --- Right, ____ he still watches the program.
The weather in London is so changeable that people always take their umbrellas with them ____ rain.