The teacher couldn’t make himself attention to because the students were so noisy[ ]

(2013·辽宁五校联合体第一次考试)What impresses me most is ________ he appears in front of others, he wears a sincere and charming smile

Of the three answers, I think yours is __________.

He sighed again and the failure in physics seemed to have completely________his confidence.[ ]

She had to _________in hospital ________she was better.