please check this exercise.

please check this exercise. . Fill in the blanks using the present perfect tense. One has been done for you. have come (come) to your school to emonstrate a few things about using computers for your studies. As we . (see) recently, th computeri a very important tool in the modern world. How many of u . (learn) to use the computer recentl . b. We know that pollution (become) a threat to our survival. Before the Industrial Revolution in the 19th century, people lived more in harmony with their immedipte environment. With the spread of industrialization, the problem of pollution . "14:0... . (increase). When the Earth's population was much smaller, no one believed pollution would ever resent serious problem. With the increasing population on the planet, it . . (become) a p rent that there are limits. Pollution is one of the signs that humans . (exceed) those limits. a few friends to join us for dinner. We . see) them in awhile. I (not) . the menu simple. I (buy) the meat I will cook. I with it. Will that be all right? (be) tothe market and I ... (plan) to make some pulao to go

Dear student,

The corrections are as follows. the other answers are correct.

b. Pollution is one of the signs that humans have exceeded those limits.
c. I had gone to the market...


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It is correct
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