0"Advances in atomic, medical, and computer technology have had the most significant impacts on the advancement of American society and an increase in the quality of life."02br 02br 00"seen many events come to pass since 1945 that have had major impacts"02br 02br 00I have heard I should not use "have had." Is this true or in the above case is it okay?02br 02br 02br 02br 00Chris0-
Top answer
0Perfect use of present perfect. Study your present perfect. 0-
— Marius Hancu
0Perfect use of present perfect.
Study your present perfect.
0-
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