______, the library was closed.
One learns a language by making mistakes and ______ them.
By the time you have finished this book, your meal ______ cold.
—Look at those clouds! —Don’t worry. ______ it rains, we’ll still have a great time.
Don’t handle the vase as if it ____ made of steel.
-----I’m more than happy to go out this weekend. ----- ______. We’ve got so much work to do at that time.