will vs going to - when to decide

I feel tired now. I think I __________________ go to bed.

• will

• am going to

I've already decided. __________________buy lunch for us.

• I am going to

• I will

I am not sure if I prefer tea or coffee. I ____________ have coffee.

• am going to

• will

I am wearing my best abaya because I ______________ to a wedding.

• will

• am going

I don't need any help with English because my brother ______________ help me.

• will

• is going to

Would you like to come to my house to study? Good idea. I _____________ bring my laptop.

• will

• am going to

My mom wants me to travel to KSA for Eid. I ___________ travel with her

• will

• am going to

Is your sister coming with us shopping? I am not sure. I ____________ ask her.

• will

• am going to

We always go to Subway for lunch. I _____________ have lunch there.

• will

• am going to

The waiter asked me I wanted chicken or lamb. Perhaps I _________ have lamb.

• will

• am going to