单选题 When it __ to computer science, Mary is the best of her class.

单选题 Physically, boys tend to have an advantage __girls.

单选题 Finally, my sister got a job __assistant manager in a bank.

单选题 It took my family three years to pay __our debts.

单选题 Wang Ping had to pay his way _ school because he came from a poor family.

单选题 It’s no secret __John will win the position.

单选题 Do you think the film is worth __?

单选题 The grateful girl thanked her teacher from the __ of her heart.