____ you understand the rule, you willhave no further difficulty.

Was the test hard–The test was so hard that he ________failed．

________ by the heavy snowfalls, Chenzhou, a city in South China, was cut off from the outside,________ water and electricity shortage.[ ]

There is still so much to discuss. ________, we shall return to this topic in tomorrow’s class.

The residents approve of the measures _______ so far in our city, _______ to reduce a gradual decrease in house prices.