I do not remember very much more about that day, _____ that the sun seemed to have stopped shining and the country no longer looked beautiful

In the streets,____________ was a hard job for the traffic police to keep the traffic in order.[ ]

It’s more and more important to protect our earth—-I think soIf everyone ______a contribution to it, our world will be more beautifu.

It is _______ he often fails inexam_______ makes his parents worried about him

Which bus do I need _____ —Bus No. 818.