It was a hard time for him. He tried his best to keep his head in a calm_______.
| A．environment | B．situation |
| C．practice | D．experience |
Tom said sorry to Kate because he took her umbralla ________.
| A．by accident | B．for accident |
| C．by mistake | D．for mistake |
________ should not be asked to study at night on weekends.
| A．Sixteen years old | B．Sixteen year olds |
| C．Sixteen-year-old | D．Sixteen-year-olds |
Mike Miller is such a quiet student that he kept silent most of the time and ______ talked to his classmates in the school.
| A．seldom | B．hard | C．ever | D．nearly |
Did you know that there were ________ visitors in Luoguo Xiang in Beijing last week?
| A．million | B．millions |
| C．million of | D．millions of |
Annie always gets good scores in lots of exams because she is a girl.
| A．shy | B．friendly | C．polite | D．hard-working |