i am afraid your luggage is overweight.
i am afraid i have to leave now.
i have to finish the job by 12:00.
that's too bad.=what a shame.
here are your tickets.
you board at gate no.12.
pls wait here till your luggage go through the X-ray machine.
have a nice flight.
may you have a good time.
may you succeed.
may you be punished.

1. to apply for driver's license. you must fill out this application form.
2. pls attach this tag to your luggage.
3.i am afraid that i will not be able to get up on time.
4.parents must take care of their children.
5. bill have to paly evey well to win the game.
basketball
6.let's see, i think i have enough money for lunch.
7. i have to pay ten us dollars, it's that all.
8. my grandfather's health is not too bad.

A: pls, put your luggage on the scale. wow, i am afraid there are too heavy.
you'd got to pay an excess baggage charge.
B:how much will that be?
A: let me see..20 US dollars.
B: here you are.
A: here are your baggage claim stubs and your boarding pass.
B: so i should go to gate 5.
A: that's right. have a nice flight.

Lesson 25 at the post office
Dialog A
A: i'd like to register this letter,pls.
B: where to?
A:los angeles.
B: ok. let me weight it.
A: that will be 3 dollars pls.
B: here you are.
do i have to fill out a form?
A: no, just give me your name,address,and telephone number.

Dialog B
A: i'd like to send this by air mail,pls.
B:is it a birthday card?
A: yes, why do you ask ?
B:cards are cheaper the letters.
A: oh, really.
B: you can't seal the envelop.
A; ok. how much for the stamps?
B: two dollars.