It is surprising that such a young boy can swim ______ the river ______ 100 meters wide.

Jack tries his best to learn how to make a vase, in order to their promise to finish an artwork with her.

一Does David like to exercise—Yes. He can do many sports, _____________soccer, basketball and tennis.

It was only quite recently, however, ______ I began to understand how much my parents love me.

Did you enjoy yourself at the party?—Yes. I have never been to _____one before.[ ]