The of new inventions should be to make life easier, not to make it harder.

_________ do you do some outdoor activities–Once a week.

It’s reported that Nest Chat allowsusers toblock others when they want to avoid _______.

to think that roses were ______ red or white, but now I know there are yellow and blue roses.

I’m sure Andrew will win the first prize in the final.-I think so. He________for it for months．[ ]