11. Look! Some boys and girls are ________ (dance) in the classroom.

The     37     (large) rainforest in the world is the Amazon rainforest in South America. It     38     (cover) five and a half million square kilometers of the Amazon Basin and spreads     39     nine countries. The Amazon rainforest is very important because it is home     40     thousands of animals, birds and insects. However, people are     41     (destroy) the area by     42     (cut) down many of the trees. This is called “deforestation”. Many     43     (live) things lose their homes     44     deforestation. The number of kinds of animals, birds, insects and trees in the rainforest     45     (be) decreasing. It’s time for us to do something     46     (protect) the Amazon rainforest.

While Tom and Mary were on holidays on the beach, they enjoyed     47     (watch) the seagulls (海鸥). They learnt a lot about these lovely     48     (bird).

Seagulls will often come close to you on the beach when they want     49     (eat) something. If you throw a piece of bread to them, they     50     (catch) it soon.

Seagulls swim     51     (good), but they don’t often dive for (潜水寻找)fish. They     52     (be) also good at flying with their large wings.     53     a seagull is flying, he puts his legs in his body.

Tom often watched them come close     54     the ground because he liked to see them bringing down     55     (they)feet before they touched the ground. Mary liked to see them sliding (滑行) over the water.     56     she said she didn’t like the noise they made.