(用正确形式填空)The river is 12 ______(foot) wide．

(用正确形式填空)Rice ______(grow) in South China．

(用正确形式填空)Be quiet! The teachers ______(have) a meeting.

(用正确形式填空)Hundreds of trees ______(plant) since last year.

(补全单词)．Manatees are very strong and ______(聪明的)．

(补全单词)Tigers are very strong and ______(侵犯的)．

(补全单词)k ______ live in Australia．

(补全单词)There are lots of ______(水下的) plants in the river．

(补全单词)Manatees are ______(濒临灭绝的)；we should care for them．

(补全单词)A manatee w______ about 1000 pounds．