. Three hours ______ enough for us to finish the task.
Steven's exam results put him __________ the top ten students in his grade.
It would be a good idea to use a plastic bottle,__________ cut off, as a container to grow young plants in.
I don't like my present work very much, but I care about its high __________.
The new tax policy only affects people on yearly incomes over 120000 yuan __________ the very rich.
With some effective measures __________,the traffic condition of the city has been further improved.