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 task is too much for me, so I can’t carry on ______any longer. I must get some help.
I haven’t seen______ this since I collected stamps.
—— What do you think of the concert?—— Oh, it was______success.
The plane flew smoothly ______ in the sky and people spoke ______ of theexperienced pilot.
Professor White has written some short stories, but he is _____ known for his plays.