She ought to stop working, she has a headache because she __________ too long.
I won’t call you, ___________ something unexpected happens.
It is better to ask someone for advice rather than ___________something.
---It’s a long time since I saw my sister. ---___________ her this weekend?
——I’m sorry that I didn’t work out this problem. ——It’s ___________our ability. I didn’t work it out, too.
The manager suggested an earlier date ____________ the meeting.