Mary lost the ticket. She didn’t go to the concert...

Câu hỏi: Mary lost the ticket. She didn’t go to the concert.

A Were Mary not to lose the ticket, she would have gone to the concert.

B If Mary hadn’t lost the ticket, she would go to the concert.

C Unless Mary had lost the ticket, she would have gone to the concert.

D Had Mary not lost the ticket, she would go to the concert.