The river marks the _______ between Mexico and the USA．

So far as English is concerned,it is not______ you might think

hales must come up for air after severalminutes, _______ a few can stay under water for an hour or more.

In the back of the garden, we found the little girl ______ with both hands ______ up with a rope.

This book gives a brief ________ of MoYan’s growth anddetails of his writing experiences