This kind of stone _____ cool in summer and warm in winter.A. is being felt B. is felt C. feels D has been felt
— Where __? — I got stuck in the heavy traffic. I __ here earlier.
— Alice came back home the day before yesterday. — Really ? Where __ ?
Visitors ________not to touch the exhibits.
— What’s the matter? — The shoes don’t fit properly. They____my feet.
In this experiment, they are woken up several times during the night, and asked to report what they__.