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
The trees are best friends. They give us a large number of things that we need.
A. we B. us C. our D. ours
