Why have you decided on the countryside for your holiday?-Because we are there is lots of clear, fresh air there.
Are these your books? — No, they’re .
I live in a house________ a big garden.[ ]
There is no doubt ________ those who work hard will succeed sooner or later.
Who didn’t turn off the light after school yesterday?– It ______ be Lucy. She told me she was the last one to leave the classroom.