Doctor Smith has made another wonderful discovery, _______ great importance.

does enjoy working in China. It’s sometimes _______ being away from his family, but people in China treat him with nothing but kindness.

busy writing the article all the morning, only ________ occasionally to have a cup of coffee.

下列各句句式与例句相同的一项是例句：虎兕出于柙

Mum, I don’t want to learn the piano any more. It’s too difficult.— Dear, don’t . I’m sure you will succeed.