【2015·浙江】If you swim in a river or lake, be sure to investigate ____ is below the water surface.Often there are rocks or branched hidden in the water.
He has got used to sleeping in ___daytime and working at ___ night.
Write ___ “s” here and write ___ “h” there, please.
The British commander tried to make Nathan Hale ___, but he failed.
Great men never give up ___ difficulty.
It is ___ great pleasure for me to be praised in public.