Nếu 2 mặt phẳng vuông góc với nhau thì mọi đường thẳng thuộc mặt phẳng này có vuông góc với mọi đường thẳng thuộc mặt phẳng kia không ???

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IV. Causes and Effects: Combine the sentences in each pair into a new sentence that show a cause/ effect relationship, using the words in brackets. 1. The weather was awful. We didn’t enjoy our camping holiday. (BECAUSE OF) ....................................................................................................................................................................... 2. Water pollution happens. Many aquatic animals such as fish can die. (LEAD) ....................................................................................................................................................................... 3. The climate is changing. The earth is getting warmer. (BECAUSE) ....................................................................................................................................................................... 4. Sue is suffering from skin cancer. She was exposed to radiation when she was young. (SO) ....................................................................................................................................................................... V. Rewrite these sentences or do as directed: 1. Paul doesn’t think about the planet. He wastes so much water. (Rewrite the sentence, Using Conditional Sentence) ........................................................................................................................................................... 2. It’s three years since I started learning Spanish. (Rewrite the sentence, Using “For”) .......................................................................................................................................................... 3. We / visit /Statue of Liberty / Ellis Island / if / we / go / New York. (Make a complete sentence) ........................................................................................................................................................... GIÚP VỚI Ạ!