He will spend six hours at his desk _______ he finishes his composition.
Although they lost their jobs, saving and unemployment benefits allow the couple to ____ their comfortable home.
But someday, all the work we have done will ____; we will go to college and go on to’have a suitable job.
We have very strict quality control and anything imperfect is ____, so customers feel secure about our products.
Before you____the design of this product, you need to study the market carefully.
Our government is trying its best to ____the social security system to protect people’s rights.