Question

→Fill in the blanks in the following passage with correct form of verbs given belowPollution (a) become a serious problem today. The problem (b) fairly complicated now because much of pollution (c) by objects and activities that (d) mankind.(a) 1) has (b) 1) are (c) 1) is caused (d) 1) benefits2) have 2) were 2) are caused 2) has benefitted3) are 3) is 3) has caused 3) is benefitting4) was 4) am 4) is causing 4) benefit​

Answer 1

Answer:

Pollution has become a serious problem today. The problem is fairly complicated now because much of pollution is caused by objects and activities that benefit mankind.