The moment I met you, I ______ you though I hadn’t seen you for about ten years.

Linda’s parents died when she was a baby and was _________by her aunt.

Great attention must       to education, especially education in the countryside.

The doctor came out and said the operation was well finished. The parents smiled ________ and the nervousness disappeared from their faces.

Plants _________carbon dioxide and at the same time _________oxygen. So we may put some in our bedrooms to purify the air.