Question

they are writing exam at present (change it in to passive voice) (a) exams are being written by them at present. (b) exams are written by them at present (c) exams are not written by them at present (d) at present exams have been written by them​

Answer 1

a) is the correct option

Explanation:

They are writing exam at present.

This tense is written in present continuous tense so we will convert it to passive voice keeping this tense in mind.

Thus, the correct option would be

Exams are being written by them at present.

Here "are" is converted to being in passive voice and "writing" is converted to written. Moreover, subject and object are interchanged

Answer 2

The correct answer is option (a) Exams are being written by them at present.

Explanation:

The active voice is in Present Continuous Tense. When we convert the voice of this tense, we use the following structure:

Active: S+is/am/are+V1+-ing+O

Passive: O+is/am/are+being+V3(past participle)+by+S

Note:While converting voice, we have to follow tense rules; each tense has its own specific active tense and passive tense.