In the past 50 years, under the leadership of the CPC, the situation of Tibet has___________much better than it used to.
The tutor(导师)asked his students to leave a wide ________ when typing their essays.
People like to shop in the supermarket because they are interested in the __________ of goods on offer and can buy whatever they want.
Many people complain of the rapid ________ of modern life.
She had a guilty________ about not telling the police what had actually happened.
_______, you can gently improve your spoken English in a short time.