It was _________he came back from Africa that year_________he met the girl he would like to marry.

nt research shows smoking and drinking ________ with your body’s ability to process oxygen, thus greatly affecting your health.

You made so many spelling mistakes again, Mary. You won’t learn English well if your spelling______— Sorry, Mr Wu. I will be more careful.

This painting is splendid, but ______ we actually need it is a different matter.

It may have been unusually cold recently but experts say it’s ________ for this time of year