One of the parts of the following sentance an error. Identify that part from the given options.

'Mr. Gupta, our Chairman, accompanied by his secretary have arrived at the office.'

Which of the following sentences is correct?

Which of the following sentences is correct?

Fill in the blank with a suitable word.

There are more things in heaven and earth ________ are dreamt of in our philosophy

No sooner did the chairman _________ than the directors put up their demand.

Pick out the part of the sentence which has an error. If there is no error mark ‘4’.
A) A white rhinocerous
B) is close
C) to extinction

Pick out the part of sentence which has an error. If there is no error mark ‘4’.
A) It wasn't necessary for her
B) To take time of work
C) when her son was ill