By the time you have finished this book, your meal ______ cold.
I’m sure you will do better in the test because you ______ so hard this year.
You’d be exposed to a lot ______ pollution if you moved to a town with pure water and air.
Some young people these days just ______ go out of their homes to contact the real world.
They produced two reports, ______ of which contained any useful suggestions.
Soon after dinner, Wayne drove off ______ the direction of Paris.