mind, she is the most wonderfulteacher that I’ve ever known, _________ is able to get across to her students________ she really thinks and means.

The book isn’t easy for Jack to understand, is it? — ____. His foreign language is far better than expected.[ ]

_______ to a task calls for perseverance and concentration, if you wish for the final success.

When he was in trouble, I offered to lend him a hand, but he ________[ ]

To our _________, Hawking didn’t worry about his problems in the slightest, _________, he just face the problems.