The villagers planted many trees in and around the village, which, _____, provide them with a beautiful scenery and much fresher air.
It is always not easy to live in a foreign country; ____ so if you can’t speak their language.
You can’t park here, sir. It is ____ for the ambulances only.
The only existing problem is ____ we can find this special wood in the forest in such a short time.
The reason why they failed the test was ____ they didn’t sleep at all the night before.
The nurse was very kind to the boy at first, but finally, her ____ gave out and she lost her temper.