1 . 选词填空

tear down; weigh on; account for; at the mercy of; approve of; broaden one’s mind; swing into action

1. Higher public debts and an increase of retirees will push up taxes and ________ companies and consumers.
2. The kite was up and down overhead ________ the wind.
3. The reasons ________ this phenomenon are as follows.
4. In recent years, many enterprises ________, trying to share a piece of cake in the online shopping market.
5. Among the biggest achievements was the ________ a European Union plan to negotiate a future legal deal to fight against climate change.