) I'm proud of you (proud=adjective, of=preposition)require-verb, required-adjective
clock60 wrote:hi guys
i wonder what is the source of the problem
i agree that the best answer is B
we need to mention firms in the first part of the sentence, and in E there is no one
such means like antecedent, and the only logical antecedent here is firms`-possessive which can`t be valid antecedent for such
but in B i see also idiom problem
MG sentence correction page 165
according to them
require of x to do y is wrong
example
she requires of her friend to do work this usage is not valid
