So were you in what you were doing that I dared not make any sound when I came in.
The insect __________ a powerful drug which affects mosquitoes.
The two boys were fighting each other, and it was hard for the old man to __________ them.
You're eighteen years old. You should __________ your family.
__________ the warm and sunny weather, bananas grow very well in Hainan.
As the story __________, the truth about the strange figure is slowly discovered.