Directions: Read the sentence to find out whether there is any grammatical error or idiomatic error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is ‘No error’, the answer is (5). (Ignore errors of punctuation, if any)

From the balcony (1) at the airport you can see the planes (2) taking off (3) and land (4) No error (5)