Such good use had beenhis spare time_________ his English has improved a lot

Thevisitors here are greatly impressed by the fact that _______ people from allwalks of life are working hard for _____ new Chengdu.

It isn’t a difficult job. I think the children can do it by .

He didn’t feel a bit nervous when ________.–No. He’d had a lot of time ________ for it after all.

“Life is like walking in the snow，”Granny used to say，“because every step ________.”(2012·新课标全国)