Mr Wu, could you tell me ________— You’d better do more speaking.

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.

I had waited for several weeks without __________ Sam so I e-mailed him again.

Most of us think of games as child* s play, but games _____ children’ s thinking and develop skills like problem solving and communication．

Please don’t make so much noise. I hear the speaker very well.