Direction: In these questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four alternatives.
The students are told to _____ these words in the dictionary

Options

A. 1) look down
B. 2) look up
C. 3) look into
D. 4) look after

Answer

B

Explanation

look up (Phr. V.) : to look for information (dictionary /reference book/computer).
look down on (Phr. V.) : to think that you are better than somebody I something look into (Phr. V.) : to examine something
look after (Phr.V.) : to be responsible for or to take care of somebody I something
Here, look up is the right usage.