1.This kind of dress has been sold out.Would you like to exchange it for something else of the same price?
2.There are (be) a great many habitants here who come from Scotland.
3.If your parents couldn't afford to send (send) you to college,you may ask our national Project Hope for help.
4.It's fascinating (fascinate) to see how differently people approach the problem.
5.The American student gave me English lessons in exchange for Chinese lessons.
6.Do you think that housing prices will keep going up in the years to come?
7.The number of foreign students attending Chinese universities has been rising (rise) since 2007.