Directions: Fill in the blanks with the proper form of the given verbs.
China's Worst Sandstorm
China's worst sandstorm in a decade caused mass disruptions on Monday as vast swathes (广大地区) of the country were thrown into a thick, orange haze of dust and sand, 【小题1】(force) authorities to cancel hundreds of flights, shutter roads and schools, and suspend outdoor activities.
In Beijing, poor visibility paralyzed traffic as residents posted photos of skyscrapers seemingly 【小题2】 (disappear) into the fog and compared images of the haze to scenes in the dystopian 1982 film Blade Runner.
Beijing and 23 other cities recorded “off the chart”levels of air pollution, according to state media. In Beijing, PM 10, a measure of tiny particles in the air often 【小题3】 (associate) with sandstorms, hit more than 9, 000 micrograms per cubic meter, or 180 times the level considered healthy by the World Health Organization. Some residents said they were wearing two masks even while indoors.
Officials in neighboring Mongolia, after the sandstorm 【小题4】 (emerge) before sweeping across northern China, were searching for more than 80 herders who had gone missing.
China's National Meteorological Center said it expected 12 provinces and municipalities — an area covering about 160, 000 square miles, about the size of California — 【小题5】 (affect) by the storm. The National Health Commission advised residents to stay indoors, seal windows and doors, and to use humidifiers and wet cloth 【小题6】 (deal) with any dust. 【小题7】 residents must go outside, they should wear a mask, a hat or scarf to protect their face.