Teenagers get less and less sleep, them at a higher risk of physical and mental health problems.

Nature is at its most beautiful in spring ______ all kinds of flowers are in blossom, ______ attracts people from all walks of life to take a spring outing.

How much did the old man________you for repairing your bike?—Five yuan. The price is very low.[ ]

What do you think of their marriage? —______, if I were Kate, I would not marry him

If I take this medicine twice a day, it should _______ my cold.