------I’d like to book a round- trip ticket.------Sorry, sir, but there are no tickets______ at the moment.
There are two thousand students in this college, ______ are from the countryside.
The lazy boy tried to get through the exam without hard work in the way ______ his friend suggested.
He has ______ lung cancer for several years and is never _______ pain.
We have ________ in your bill the cost of the teapot you broke just now.
His mother doesn’t ________ of her going to study in the United States alone.