The correct answer is “is playing.”
A present continuous tense describes an action that is happening right now.
I am playing tennis.
In the sentence above, the action of “playing tennis” is happening right now, but eventually it will be over.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.