Your niece is very strict and ______ worth teaching, but your nephew is not. Look, he is now ______ asleep in class.
Only when he put his foot into the river________that the water was too cold to swim in.
Hardly________of the room when it began to rain.
He may be________of playing his radio too loudly by law,especially when it is time for sleeping.
I have ever found such a case________the son refused to support his mother when she became too old to feed herself.
We didn’t feel surprised when we found he fixed his eyes on the food with a(n)________expression on his face,for we knew that he hadn’t eaten anything for 3 days.