Choose the sentences in which the conjunction is used correctly:
(A) Since the lab assistant was on leave, therefore the chemistry practical was moved to Thursday.
(B) The new hostel warden is not so strict as the one who retired last year.
(C) Keep the minutes of the meeting in the locked drawer lest someone will read them before Monday.
(D) Unless your library card is renewed by Friday, you will not be allowed to borrow books during the exams.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (B) and (D) only
(A) Since the lab assistant was on leave, therefore the chemistry practical was moved to Thursday. — Incorrect.
- “Since” already gives the reason and joins the two parts.
- Adding “therefore” puts a second joining word in the same link.
- Correct form: Since the lab assistant was on leave, the chemistry practical was moved to Thursday.
(B) The new hostel warden is not so strict as the one who retired last year. — Correct.
- In a comparison with “not”, “so ... as” is correct (“not as ... as” is also correct).
- “So ... as” is wrong only in a positive comparison.
(C) Keep the minutes of the meeting in the locked drawer lest someone will read them before Monday. — Incorrect.
- “Lest” means “for fear that”.
- It is followed by “should” and a verb, never by “will”.
- Correct form: Keep the minutes of the meeting in the locked drawer lest someone should read them before Monday.
(D) Unless your library card is renewed by Friday, you will not be allowed to borrow books during the exams. — Correct.
- “Unless” means “if not”, so its own part takes no “not”.
- The “not” here is in the other part (“you will not be allowed”), which is correct.