用所给动词的正确形式填空。![](http://tikupic.21cnjy.com/14/37/1437e04a6d7dc66b26e45781a339565b.png)
Every year animals all around the world take part in some wonderful journeys.
Here {#blank#}1{#/blank#}(be) the stories of two amazing animal travelers
Humpback whales prefer a Slowjourney. The humpbacks, which travel over
![](http://tikupic.21cnjy.com/2f/23/2f23e85f076e81fcbf967043c59cf389.png)
10,000 kilometers on their journey from Alaska to Hawaii, swim at a{#blank#}2{#/blank#}(relax) speed of about 1.6 kilometers an hour. Although they{#blank#}3{#/blank#}(not swim) fast, humpback Whales travel farther than any other kinds of whale.
Every August a fantastic sight can{#blank#}4{#/blank#}(see) in the skies above Ontario and Montreal—millions of amazing Monarch butterflies beginning their 4,000-kilometer journey from Canada to Central Mexico. In fact, the journey, which{#blank#}5{#/blank#} (take) about 3 months, is longer than the average life of the butterfly. Finally many of the butterflies reaching their final place are the great grandchildren or even the great great grandchildren of the butterflies who {#blank#}6{#/blank#}(begin) the journey in Mexico the year before.