There is no greater pleasure than lying on my back in the middle of the grassland, _____at the night sky.A.to stare B. staring C. stared D, having stared
It’s the fifth time ______ late this term.
The sun shines brightly in the sky______ us light and heat.
----- Do you have clothes ______? I’ll wash them for you. ------No, thank you. I will wash them myself.
______ a good insulator , rubber is often used in cables.
Do you mind ______ alone at home?