Their cheerful voices showed that they were having a discussion.
It’s not easy to change habits,________ with awareness and selfcontrol,it is possible. (2013·重庆,23)
Don’t turn off the computer before closing all programs,________ you could have problems. (2013·北京,22)
I was glad to meet Jenny again,________ I didn’t want to spend all day with her.(2013·大纲全国,23)
She says that she’ll have to close the shop ________ business improves.(2013·江西,28)
Mark needs to learn Chinese________his company is opening a branch in Beijing.(2013·山东,26)