The tourists can not help wondering ______ the ancient people could manage to complete the magnificent building without modern equipment.
No matter how low you consider yourself, there is always someone _________ you wishing they were that high.
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.