Multiple choice

Directions: Give the appropriate replacement for the underlined word(s) in the given sentence to make it grammatically correct. If no improvement is needed, mark (4) as the answer.

At present genetic engineering is costly of detecting disorders.

  1. to detecting

  2. to detect

  3. for detecting

  4. No improvement needed

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In this case, the usage 'for detecting' is preferred to 'to detect'. 'For' means 'for the purpose of'. In case to use the infinitive 'to', we have to rephrase the whole sentence like -''In order to detect disorders............''.