It is quite often that the workers are always ________ by heat if they work outdoors for a long time in the hot summer afternoon.
Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
Neither of them knew what_____ was doing.
The murderer was brought in, with his hands _____behind his back.
--" Would you mind the window? It's hot here!" May said. --"__________. "Tom replied.
--Hi, Tracy, you look tired. --I am tired. I__________ the living-room all day.