1. week:a period of seven days and nights usually measured in Britain from Monday to Sunday and in the US from Sunday to Saturday.

See you next week.

2. three:

My little sister’s only three.

3. sixteen:

He moved to London when he was sixteen.

4. me:

Used by person speaking or writing to refer to himself or herself.

Give that book to me.

5.seat:

A please where you can sit,especially one is a vehicle or one from which you watch a performance,sports event etc.

I was in the back seat and Jane was driving.

Making a story using these words

A:Hello,Jenny.Can I sit next to you?

B:Yes.The seat is empty.

A:I haven’t seen you last week.

B:Yes.I have got flu.I have stayed at home for three days.

A:Sorry to hear that.

B:No.I just bought sixteen lemons in the fruit shop.

A:Oh.really.

B:Yes.I drank a lot of water with lemon.