Correct Answer : is equally successful as
'Equally and 'successful as' are not used together. So, remove 'equally' from the second part of the sentence and replace it with 'as', e.g., is as successful as our previous project.
Correct Answer : Option (B) : was behind
Explanation : The word 'behind' in the 2nd part of the sentence needs to be replaced with 'beyond', e.g., Although the stress was beyond her capacity yet she didn't complain.
Correct Answer : Option (D) : like dancing.
Explanation : If the subject is everyone or everybody, the verb must be singular. So, the verb in the fourth part of the sentence must be singular, e.g., likes dancing.
Correct Answer : Option (C) : as she
Explanation : In this sentence, the intent is to convey 'from the time' she came, so replace 'as' with since, e.g. She has been studying with me since she came here.