1. Knowing(know) that you are interested in Peking Opera, I’m writing to invite you to watch it with me.
2. I looked up and noticed a snake winding(wind) its way up the tree.
3. Working(work) hard as he did, he was still unable to earn enough money to buy a car.
4. On our way home, we noticed him carrying(carry) a black bag.
5. With the teacher helping(help)me, I passed the exam finally.
由于老师的帮助, 我终于通过了考试。
6. It rained heavily in the south, causing(cause) serious flood in several provinces.
7. I’m sorry to have you waiting(wait) for so long.
