WEEK THREE 第三周Unit 2 The sun is shining.基础闯关三、用所给动词的适当形式填空。[来源:]1. The boy is _______(read)a book.2. The butterflies are _______(dance)around the flowers.[来源:学+科+网]3. Alice is _______(swim)in the river. It's hot today.4. It is _______(rain)outside.5. The dogs a...