---You haven't been to the mountain, have you ?---_______.I'll go there next week. It will be the first time for me.
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.