An iPhone6 costs over 5,000 yuan, doesn’t it— Yes. I don’t know it is worth the price. Maybe I can buy a Huawei or Miui (小米) phone.

So far，only one man has ________ a theory that seems to fit all the facts

Ordinary soft drinks enter human bodythrough stomach ______ alcohol goes directly into the blood system.

When Tracy was told her son’s illness could be cured, she left the hospital

I’m afraid the headmaster is _________ busyto meet the visitors