1. Thank you for calling.
謝謝您打電話來。
還能這樣說：
It is nice of you to call.
Thanks for calling me.
應用解析：
call off 取消，叫走，使轉移；
call on 拜訪，要求，招致，指名；
call out at 對某人高聲叫喊；
call over 點名；
call round 拜訪
2. I've enjoyed talking to you.
同你談話很愉快。
還能這樣說：
It's nice talking with you.
Talking with you is a great pleasure.
諺語：
To teach a pig to play on a flute.
對牛彈琴。
3. I've got to hang up now.
我得掛電話了。
還能這樣說：
I've to end the phone now.
I'll have to ring off now.
應用解析：
Really now! (=Now Really!)
哎呀！真的嗎！不會吧！
4. I would not delay your precious time.
我不耽誤您寶貴的時間了。
還能這樣說：
I won't take any more of your time.
I won't keep you any longer.
應用解析：
admit of no delay 刻不容緩；
without delay 趕快，立刻；
unreasonable delay 無理的拖延；
delay in payment 延期付款