Show that none of the following sentences is a statement :
Give me a cup of tea .

Show that none of the following sentences is a statement : 2x+7=0.

Show that none of the following sentences is a statement : Do your duty.

Show that none of the following sentences is a statement : Howdo you do ?

Show that none of the following sentences is a statement : Is every set infinite?

Show that none of the following sentences is a statement : Close the window .

Show that none of the following sentences is a statement : a , b , c are the lenghts of the sides of a triangle .

Show that none of the following sentences is a statement : May god bless you !

Show that none of the following sentences is a statement : The sum of two complex numbers is real .

Show that none of the following sentences is a statement : Is (-4) a positive integer ?

Show that none of the following sentences is a statement : The sum of a and b is greater than 2 .