Why wasn’t your boyfriend at the party last night ?He……………..the lecture at Shaw Hall37/65Why wasn’t your boyfriend at the party last night ? He……………..the lecture at Shaw Hall. I know he very wanted to hear the speaker.may have attendedcan have attendedwas to attendedshould have attendedGiải thíchĐáp án A may have done : phỏng đoán ( 1 sự việc xảy ra trong quá khứ )