21.
Answer the next 5 Questions.
Comprehension:
In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
Many people believe that animals possess a sixth sense and know (1) ______ the earth is going to shake. Some experts (2) ______ that animals' more acute hearing helps (3) ______ to hear or feel the earth's vibrations. (4) ______ can sense an approaching disaster long before humans (5) ______ what's going on.
Select the most appropriate option for blank no. 1.