A:氯化铜CuCl
B:硫化钠Na2SO4
C:硫酸铁Fe2 (SO4)3
D:硝酸镁MgNO3
用所给词的适当形式填空
(1)It's time____(play)football.
(2)We want____(visit)the San Francisco next month.
(3)What about____(go)____(swim)tomorrow?
(4)—What are you going to do tomorrow? —I____(have)a party at home.
(5)She____(be)an English teacher next year.
问: