Fill in the blank with prepositions
1.    They left home ___ dawn/night/noon.
2.     They are___work.
3.     Our exam is___hand.
4.     I can see better___ a distance.
5.     I could not know him___ first sight.
6.     The train ran___ full speed.
7.     I sold their___ a loss.
8.     I cannot finish the work___ a sitting.
9.     I have bought this TV___ taka 200.
10.    Pure milk is dear ___ present.
11.    They travel ___ boat/bus/train.
12.    They work ___ day/night.
13.     I informed him ___ letter/telephone.
14.    She sent me a letter ___ post/hand.
15.     Eggs are sold ___ dozen.
16.     We are paid ___ cheque.
17.    I know/him ___ name.
18.     It is 4 pm ___ my watch.
19.     We defeated them ___ two goals.
20.     The teacher pulled him ___ the ear.
21.     I did it ___mistake.
22.     I am speaking _ my class.
23.     She cried out __fear.
24.     She was silent __ shame.
25.     I heard a cry __help.
26.     He ran away ___ life.
27.     This house is ___ sale.
28.     What is Dhaka famous___?
29.     We are the passengers ___ Khulna.
30.     The girl is tall___ her age.
31.     In the desert,___ miles and miles there is no house.

Ans.: at(1-10), by (11-30), 31. for