A-A+
The software company_____sent out e-mails cont
问题详情
The software company_____sent out e-mails containing a virus to about 50,000 members on an e-mail discussion list.
A．accident
B．accidental
C．accidents
D．accidentally
参考答案
正确答案：D
解析：动词前应该用副词来修饰，因此选择副词accidentally。
