After summer rain, the rainbow looks more beautiful ____ a blue sky.
--Tom is very stupid. He fails in every exam. --_____, he is more lazy than stupid.
---I am sorry I didn’t do a good job. ---Never mind. ____, you have tried your best.
Allen had to call a taxi because the box was ____ to carry all the way home.
Your composition is well written, ____ some spelling mistakes.
Water can absorb and give off a lot of heat without big changes in temperature , thus creating a environment .