The snake is a very surprised animal . It sleeps with its eyes open , it feel with its tongue .The snake can move very quick , a snake exuviates （蜕皮）many times each year . It slides (滑动） out its old skin as if it were a worn coat . Here is the more surprising thing of all , a snake swallows (吞）things all in one piece, it can swallowed animals big than itself . Small snakes can swallow bird’s eggs without breaking it . Snakes eat mouse ,they can be a big help around farm . Farmers like the kinds of snakes that eats mice .surprised ---surprising
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(答案→)surprised ---surprising
解析：
【小题1】v-ed修饰人， v-ing修饰物，故surprised ---surprising。
【小题2】表示经常或反复发生的动作用一般现在时，且主语为第三人称单数。所以Feel ---feels。
【小题3】用副词修饰动词。
【小题4】 out of是固定用法，意思是自……离开。
【小题5】句意：以下是所有事情中最令人吃惊的一件事。所以这里用最高级。
【小题6】情态动词后用动词原形。
【小题7】有“than”，故用比较级。
【小题8】指代bird’s eggs，所以用them。
【小题9】句意: 蛇吃老鼠。所以用名词复数。
【小题10】这里含有一个定语从句，关系词指代snakes，所以谓语动词用复数，eats ----eat。