We all should make a contribution to ______ our environment.

Hardly ____ the airport when the plane took off.

依次填入下面一段文字横线处的词语，最恰当的一组是（ ）微信朋友圈里的很多人往往是现实生活中的朋友。私密性是微信朋友圈的基本属性， ① ， ② 互联网的开放性，朋友圈 ③ 具有公共性质。在朋友圈里 ④ 要遵守社交礼仪外， ⑤ 恪守公共交往规则及秩序，个人在朋友圈发布 ⑥ 转发信息要慎重，不能盲目动指头。每个人在各自朋友圈发信息时，要承担一定的“注意义务”。选项①②③④⑤⑥

Kate works a school. Her father works a farm.

_______ do you think of our new English teacher—-Oh, very great. She is so kind to all of us.