Institution: Non Government Teachers Registration and Certification Authority (NTRCA) Exam: ১৮ তম শিক্ষক নিবন্ধন পরীক্ষা (স্কুল পর্যায়) (15-03-2024) || 2024
Topic: Right Form of Verb, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The sentence "The work is to be _______ immediately" requires a form of the verb that fits grammatically and contextually within the sentence structure. The options provided are "do," "done," "doing," and "did."

To analyze these choices:
- A) "do" is the base form of the verb and doesn't work here because it lacks the necessary aspect and participle form required by the structure "is to be."
- B) "done" is the past participle form of the verb "do." It perfectly fits the sentence as it aligns with the passive voice construction "is to be." This indicates that the action of completing the work is required to happen immediately.
- C) "doing" is the present participle form, which doesn't fit the context since it suggests an ongoing action rather than a completed action.
- D) "did" is the simple past form of the verb, which is unsuitable because it does not match the present continuous structure implied by "is to be."

Thus, the correct answer is B) "done," as it completes the sentence correctly, indicating that the work needs to be completed immediately. The passive construction emphasizes the action to be taken rather than the doer, which is a typical usage in instructions or formal contexts.