“______something valuable and throw the rest away,”the mother asked her children when they were cleaning the old house.
A heavy learning burden leads to unhealthy behaviors such as poor eating habits, which ___ damage the health of students.
How did you ___ to paint the whole house in a week?
Black clouds had completely ___ the sun.
It was an unpleasant subject ____ we _____ for a long time.
It must have rained last night, ________ the ground is wet now.