1. What is the correct preposition to insert in the sentence The car is ___ the street ? a) on; b) under; c) in

1. Preposition \(\textbf{a) on}\) is the correct choice to insert in the sentence "The car is \_\_\_ the street". This is because when we talk about the location of a car in relation to a street, we usually use the preposition "on". For example, we say "The car is on the street" to indicate that the car is situated on top of the street surface.

2. The question "Where is my book? — It is \_\_\_ the table." can be correctly rephrased using preposition \(\textbf{b) on}\). Therefore, the rephrased question would be "Where is my book? — It is on the table." This is because when we talk about the position of an object in relation to a table, we commonly use the preposition "on" to indicate that the object is resting or situated on top of the table.

3. Preposition \(\textbf{c) in}\) should be used to complete the sentence "My pens and pencils are \_\_\_ the pencil-box." When we talk about the location of multiple objects inside a container like a pencil-box, we usually use the preposition "in". Therefore, the sentence should be completed as "My pens and pencils are in the pencil-box."

4. The question "Where is the cat? — It"s \_\_\_ the armchair." can be correctly rephrased using preposition \(\textbf{a) under}\). So the rephrased question would be "Where is the cat? — It"s under the armchair." This is because when something is located below or beneath another object, we typically use the preposition "under" to describe the position.

5. The preposition that should be used to complete the sentence "The boy is \_\_\_ the house." is \(\textbf{b) next to}\). This means the correct sentence is "The boy is next to the house." This preposition is commonly used to indicate the position of something or someone in close proximity to another object or person.