______ you have made a promise, you should carry it out.
Would you please __________ the paper for me and see if there are any obvious mistakes?
It rained heavily in the south,__________ serious flooding in several provinces.
According to the recent research, heavy coffee drinking and heart attack is not necessarily __________ and effect.
The following day she didn’t go to the club. __________, she walked her dog in a park nearby.
In the botanical garden we can find a(n) __________ of plants that range from tall trees to small flowers.