We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
She is very dear to us. We have been prepared to do it takes to save her life.
My new shirt doesn’t fit me well, so I’ll take it back to the store sold it.
Was it in the village_______we used to live in_______the accident happened?
If you are traveling_______the customs are really foreign to your own, please do as the Romans do.