II. Complete the sentences with the words in the box. portable device submarines imitates patents observed inventions charge
II. Complete the sentences with the words in the box. portable device submarines imitates patents observed inventions charge researching inspiration collapse versatile economical 1. The computer is definitely one of the greatest ______in the world. 2. People often use the natural world as ______for their inventions. 3. ______are very useful for scientists to learn about … Đọc tiếp