My mother bought me a computer ______ [geim] on my ninth birthday.

I think China ______ a much stronger and more beautiful country in 2050.

Linda, together with her parents, ______up the mess in the park at the moment.—It’s meaningful to be a volunteer. Let’s join them.

Once we discover a mistake, we should not ______ it but correct it immediately, to create better conditions for economic development.

Whose shirt is this? Is it Tom’s? — No, it isn’t. _______ is white.