Mike ________ his computer and checked his E-mail.
单选题 (10 分) 10分
A.
turned on

B.
turned off

C.
turned up
出自:国家开放大学理工英语21

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块