I felt when I heard Li Kaifu was ill. —But I didn’t. You know, he always worked too hard and didn’t sleep enough.

It was not until the beginning of the twentieth century_______ to explore space. [ ]

What _________ when the earthquake happened on May 12th

I would describe Mum’s menu of steaks, smoked chicken and roast beef as ________.—-I am ________ you. A healthy diet is basic necessity.

There is“s”in the word “desk”.