A digital ring is locked on every newborn baby’s foot _______ they are taken by strangers out of the hospital.
We offered him our congratulations_____his passing the college entrance exams.
—— How long has the bookshop been in business? —— ______1987.
In Hangzhou Mr. Black was so struck____the beauty of nature that he stayed___another night.
He is running____the wind towards the station_____ Tom running ________the right.
I don’t think you can work out the maths problem____her help.