Do you want to keep goldfish —No, they are ______ difficult for me______ take care of.

Dad, my shoes arc old. I want to buy a new .

The boys seldom eat snacks ______the girls often eat them.

It is strange that the small boy _________ work out such a difficult exercise, which is even hard to settle for adults.

My cousin is good at all his subjects at school, but he never ________.—-What a ________ boy! We should learn from him.