It's more useful to learn modern languages,__________ English and German, than Latin.
Taking a trip abroad is certainly good for old couples, but it remains ____ whether they will enjoy it.
--Aren’t we living a happy life? --You should not be content with what you have. _______, you must be better in every aspect of your life.
Noticing small changes early helps you _______ some big changes that are to come.
You should exercise more, and you see you’re already out of ________ breath after completing such _______ small task.
—Mom, I don’t know which song to choose in the singing contest.—Why not ask your friends?You know .