Several cars are available within this price________.

I wished to make a round-the-world tour by plane but I hadn't enough money to pay for the ___.

The teacher suggested we do the exercises with great ________ though they were easy.

Perhaps we need to clear away these books to make ______ for our new students.

The members of the club wouldn't run a _____ in entrusting（委托） the organization to an unreliable person.