Question

Did you go to the show last night ? A. were B. have been C. has been D. was

不选B，C是不是因为 last night？为什么不可选A 请详细回答
Yeah. Every boy and girl in the area____invited

Answer 1

选D是因为，every boy and girl 的主要词是"every" 它的谓语跟单数，所以不用答案A和B（这两个都是用在复数时的情况）。而因为问句里的"last night"的，所以不能用C。如果把省略的词加入句中就比较明显了。
Yeah. Every boy and girl in the area_ was___invited （last night）.

Answer 2

排除A B，因为 EVERY BOY AND GIRL都代表单数， 而C 没有对应问题 DID YOU``` 最后剩下D