In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.

Let me give you an example: The car's wheel are loose.
The answer to this example can be: The car's wheel is loose.
Here is why: The instance of are is replaced by the word is. This makes the sentence grammatically correct.

OK. solve this:
Otherwise , it will be a problem for us to understand certain thing in life . 
Answer:
Otherwise , it will be hard for us to understand certain things in life . 