(2020原创)My parents were not at home, ________ I had to look after my 5yearold sister.
(2020原创)You may do the survey yourself ________ work with someone else together.
(2020原创)W________ my mom and I were talking about my father's birthday surprise, he came in.
(2020原创)The soup tastes terrible b________ I put too much salt into it.
(2019乐山改编)Bike sharing is very useful in our daily life a________ it still has some disadvantages.
(2019岳阳改编)The toys are really old, ________ I still want to keep them.
