–What should I do, doctor? --________ healthy, you should take more exercise.
We all love our English teacher, He always makes his English class very ________.
Last night Dad and Mum didn’t come back home ________ I finished my homework.
Work hard, ___________ you’ll get good grades.
The people were afraid, because the tiger had escaped _________ the zoo.
________Tom ________ Mary speaks Chinese well, so they can communicate with Chinese students very well.