Directions: In the following questions, some of the sentences have errors and some have none. Find out which part of a sentence has an error. The number of that part is your answer. If there is No error, the answer is (4). 

Q:

When students are ill (1)/they find that they have a lot of work (2)/to catch up with when they return. (3)/No error (4). 

• 1
  1
• 2
  2
• 3
  3
• 4
  4