English » Fill in the blanks
Select the most appropriate option to fill in the blank.
You will find it difficult ______ but later you will get used to wearing a mask.
at first
firstly
on first
at the first
option A at first is right answer.
option C&D are incorrect grammatically.
now at first- it is used when we want to show the contrast in sentence,
firstly- used to represent a first point or reason.