Green is the color of _______ nature. And you canenjoy the colorful rainbow in _______ sky after the rain.

Tom_______two of his classmates_______invited to the party.

The policeman warned the drive ________ so carelessly.[ ]

For all these years I have been working for others. I’m hoping I’ll my own business someday.[ ]

It’s no use __________ without taking action. [ ]