Your naughty brother hardly puts his books in order, _ he

The CCTV Spring Festival Gala is a big stage, ________ many new actors or actresses are tobecome famous[ ]

It is well known to all that water, ______ enough, can change into ice quickly

What did________ old man in red buy in your shop—He bought________ umbrella.

Good learners often _______ what they need to learn _______ something interesting.