so / because

My cat is hungry ________________ it wants to eat a fish.

• so

• because

Dora was happy ________________ she had a great time at the park.

• so

• because

I wasn’t careful ________________ I fell off my bicycle.

• so

• because

Mary was sick ________________ she didn't go to school yesterday.

• so

• because

He didn’t ______________ so he failed the exam.

• studied

• studyed

• study

• studyyed

The room is still messy because I didn’t __________ it.

• cleaned

• clean

• cleans

• cleanned

I’m afraid of bees ________________ they always sting me.

• so

• because

It is raining ________________ Mum asks me to an umbrella.

• so

• because

The weather is cold in winter ________________ people usually wear warm clothes.

• so

• because

We didn't _________ for Ben because he was very late.

• waited

• waitted

• waits

• wait