----What ________ the number of the students in your school? ---- About two thousand. A number of them _______ from America.
---What’s Helen’s telephone number? --- ______ telephone is 5673466.
His name is Tony Green. His __________ is Tony.
--- What color is the map? --- ________________.
Which of the following is short(缩写) for “重要人物”?
---Sit down, please! . ---_______________.