Unit 13 Were trying to save the earth! 第二课时 Section A (3a3b) 一、根据句意 ， 用括号中所给单词的适当形式填空。 1 Hes going to work in the _(south) part of China next year. 2 Look！ The tiger _(keep) in a tiny cage and cant move. 3 Eating too much junk food is really _(harm) to your health. 4 Most students went there for _(science) activities last week. 5 Something must be _(do) to protect the sharks because they are endangered now. southern is kept harmful scientific done 二、根据句意 ， 选择方框中的单词并用其适当形式填空。 6 Our government has
