Choose the correct option to replace the underlined part of the sentence:
The new water purifier in our school canteen is capable to clean nearly two hundred litres of water in an hour.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → capable of cleaning
“Capable of” + -ing:
- “Capable” takes the preposition “of”. A verb after “of” takes the -ing form.
- The given sentence says “capable to clean”. This is wrong: “capable” is not followed by “to” + verb.
- Complete sentence: The new water purifier in our school canteen is capable of cleaning nearly two hundred litres of water in an hour.
Why the Other Options are Incorrect?
Option 1: capable for cleaning — Incorrect. “Capable” takes “of”, not “for”.
Option 2: capable of clean — Incorrect. After “of”, the verb must take the -ing form: “cleaning”.
Option 4: capable in cleaning — Incorrect. “Capable” takes “of”, not “in”.