In summer there is________swimming as a means of keeping fit.
I hope my teacher will take my recent illness into _____ when judging my examination.
The child enjoyed _____ up the wooden bricks then knocking them down.
The illness from which Mary is suffering has now been _____ as hepatitis (肝炎).
How can we get this language point _____ to the students.
If the boy had _____ the dog alone it wouldn't have bitten him.