_________that river ________very clean

My cat’s really fat.—You _____ have given her so much food. (浙江2007)

in ________ with colleagues losing their jobs atticket offices

On account of the development of theeconomy, the environment is seriously polluted and we must ________ the emission of the carbon dioxide. [ ]

sfied _______ with the payment, he took the jobjust to get some work experience.