1. She feels strange when she drives on the left.

=> She is not unsed

2. The waitress serves breakfast at 7 o'clock.

=> Breakfast

3. They didn't find the trip interesting because the weather was extremely severe.

=> Due to

4. A six-yesr-old brought a gun to school in March.

=> The boy

$\color{#00FFFF}{\text{#}}$$\color{#CCFF99}{\text{ᗩ}}$$\color{#99FF99}{\text{ꮮ}}$$\color{#33FF99}{\text{ꮖ}}$$\color{#00FF99}{\text{ꮑ}}$$\color{#99FFCC}{\text{ꭺ}}$$\color{#66FFCC}{\text{ꭺ}}$$\color{#00FF33}{\text{ꭺ}}$$\color{#00FFCC}{\text{ꭺ}}$$\color{#00FFFF}{\text{ꭺ}}$⭐

$1$. She is not used to driving on the left.

`***` used to do sth (v): từng làm điều gì đó..

$2$. Breakfast is served by the waitress at 7 o'clock.

`@` Bị Động HTĐ:

$-$ S $+$ am/is/are $+$ V ed/PTII by sb

$3$. Due to the extremely severe weather, they didn't find the trip interesting.

`***` Due to $=$ Because : Bởi vì

`***` severe (a): kinh khủng

$4$. The boy who brought a gun to school in March is 6 years old

`@` QKĐ:

$-$ S $+$ Ved/ cột 2