—Where is my book , Dad? I can’t find it.—Look! It’s on the desk. You must _____ .A. put away it B. put it away C. put them away
She has some trouble _____ out the math problem.
You have to adapt_____ the new environment when you go to a new place.
I want to know _____.
Both Mark and Jim _____ very hard. They are top students.
Her father used_____ in the countryside when he was a small child.