---Who is _______ man with a ponytail (马尾辫)under the tree ?--- Sorry, I don’t know. But I think he must be ______ artist.
The old man is ______ weak ______ say any words.
We should try our best _______ poor children _______ clean water and food.
You’d better go out for a walk instead of _______ in your bed.
____________ is enough money to carry on with our work.
It is really nice ___you ___ me work out the problem.