Multiple choice

Directions: Choose the suitable verb from and fill in the blank.

There ________ something wrong with the pressure cooker if it is not working properly.

  1. should have been

  2. must be

  3. must have been

  4. should be

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

 If it is not working, there has to be (must be) something wrong.