retailers, corporations and businesses to reduce single-use plastic. That is, we are going to take actions to deal with the current plastic pollution. Every action to reduce single-use plastics ___4___ (send) a message to the industry that it's time to change. We can no longer allow products that ___5___ (use) for a few seconds to pollute ___6___ (we) planet for a lifetime.

【答案】4. sends/will send/ is sending

5. are used

6. our

【解析】

本文为说明文。作者呼吁大家世界各地的人们发起"百万蓝色行动"，敦促零售商、公司和企业减少一次性塑料的使用。

【4题详解】

考查时态。根据语境可知，此处可以理解为对目前、将来或现在正在进行的动作的描述，可以使用一般现在时、一般将来时或现在进行时。故填sends/will send/ is sending

【5题详解】

考查语态。句意：我们不能再允许使用几秒钟的产品。根据句意及句子结构可知，此处应使用被动语态；此处为定语从句的谓语动词，先行词是products，谓语动词应与先行词保持主谓一致，且描述的目前的事情，应使用一般现在时的被动语态。故填are used。

【6题详解】

考查代词。此处指"我们的星球"，应使用形容词性物主代词。故填our。

　　More Chinese senior citizens ___7___ (become) active users of WeChat in recent years, according to a recent study. The study aims to learn about the digital life of people above the age of 55. The report showed that elderly users spend around 1.37 hours ____8____WeChat every day and have 104 WeChat friends on average. The report said 50.3 percent of elderly users learned how to use WeChat from their children or grandchildren, ___9___ (suggest) that family members should be more ____10____ (patience) when they introduce new technology to elderly people.

【答案】7. have become

8. on 9. suggesting

10. patient

【解析】