— _______ may I keep these books?— Twice a week.
The pears in my basket are smaller than _____in Jim’s.
Bob is a football fan. He often asks me _______ football matches with him.
Vienna,the capital of Austria,is the River Danube and The Blue Danube is auss.
Where's Tom? His mother ______ him now.
You will find ______ useful to learn even a little English.