This kind of stone _____ cool in summer and warm in winter.A. is being felt B. is felt C. feels D has been felt
The hotel is going to employ an assistant with ______ knowledge of French and ______ experience of management.
When ______, the new railway will run for 250 miles.
It was really noisy in the workshop. Not until ______ at the top of my voice ______ to look at me.
______ the warning message, more visitors might have been trapped in the flood.
______ to sunlight for too much time will do harm to one’s skin.