【推荐1】这些花必须天天浇水，否则就会枯死。
All these flowers ________ ________ ________ every day, or they will die.

【推荐2】因为它是你妈妈送给我的生日礼物，所以你必须保证要保管好它。
It’s a gift from your mum for my birthday, ________.

【推荐3】它一定属于卡拉。
It ________ ________ ________ Carla.

【推荐1】I love singers. Singers write their own songs. （合并为一个句子）
I love singers _______ _______ their own songs.

【推荐2】我现在正在写博客。
I am _________ _________ _________ at the moment.

【推荐3】她不仅英语读得好，而且英语书写也很美。
She ________ ________ ________ English very well ________ ________ ________ it beautifully.

【推荐1】Students can’t take magazines out of the reading room without permission.(改为被动语态)
Magazines ________ ________ ________ out of the reading room without permission by students..

【推荐2】这些书必须在一周内归还图书馆。
These books ________ ________ ________ to the library ________ a week.

【推荐3】青少年们应该从小被教育保护环境。
Teenagers _______ _______ to protect the environment from an early age.