Beijing is ____ old and beautiful city. It’s _____ capital of China.

Could you tell me what happed last night ?一I can’t go into detail now because it _______ take too long.

The companies are working together to create_____ they hope will be the best means of transport in the 21st century

It was at the school _____ was named after a hero________ he spent his childhood.

udents were studyingin____________classroom when, all of ____________sudden,the lights went out