Dickson left his father’s firm and ____business on his own.

Just as a book is often judged ______ by the quality and appearance of its cover, a person is judged immediately by his appearance

I have you asked John to come to the party thisevening–Yes，I have，but he＿＿＿＿

The new teacher referred to________to our school yesterday

What would you do if it ______ tomorrow ?—We have to carry it on , since we’ve got everything ready .