They will come to help us with the harvest ______ they are busy tomorrow[ ]

are still many problems ahead of us, but by this time next year we can see light at the end of the ________.

Many people do not realize the importance of health __________ they have fallen ill.

The players _____ from the whole country are expected to bring us honor in this summer game [ ]

The girl has a great interest in sport and _______ badminton classes twice a week over the last three years.