(2019原创)T________ he is only seven years old, he knows a lot about science.
(2019原创)I'm sorry. I forgot to take out the rubbish w________ I left home in the morning.
(2019原创)My mom always cooks chicken soup for me b________ it's good for my health.
(2018承德二模)The story mainly tells us that i________ we work hard, we won't fall behind.
(2018保定莲池区二模)We all know that Mike is not an officer, ________ a common soldier.
(2018张家口三模)My clock didn't go off this morning，________ I didn't arrive at school on time.
