Grammar; Because and So

I was late for class this morning ______ the bus was late.

• because

• so

My classmate studies very hard, ______ she always gets good grades.

• so

• because

Thomas was really hungry this morning _____ he didn't eat breakfast.

• so

• because

Sweden is a cold country _____ people wear warm clothes in winter.

• so

• because

I fell off my bicycle _____ I wasn't careful.

• so

• because

My bedroom was very cold _____ I forgot to close the window.

• so

• because

It's raining outside, _____ you should take your umbrella.

• so

• because

I was angry _____ my neighbour had a noisy party last night.

• so

• because

They felt very bored, _____ they turned on the TV and watched a movie.

• so

• because

The dress was very expensive _____ I didn't buy it.

• because

• so