time you havefinished this book, your meal ______ cold.

I’m very tiredI _______ on the night shift for several weeks.

Studies show that ‘people are more_________ to suffer from back problems if they always sit before computer screens for long hours.[ ]

下列句子，没有语病的一句是（3分）

It’s reported that scientists have________ an effective way to deal with H1N1.–Really That’s great!