13. When is a proper time to call?
什么時候打來最合適？
還能這樣說：
When is a good time for calling?
When is he available?
諺語：
In time of prosperity, friends will be plenty; in time of adversity, none amongst twenty.
富在深山有遠親，窮在鬧市無人問。
14. I'm also finding him.
我也正找他呢。
還能這樣說：
I'm also trying to get him.
I don't know where he is, neither.
諺語：
Water finds its own level.
水往低處流。
15. Could you possibly ask him to call me back?
你可以叫他給我回個電話嗎？
還能這樣說：
Can you tell him to give me a phone call later?
Will you inform him to return my call?
應用解析：
Ask me another!
問點新鮮的！多此一舉！我怎么知道！（通常用于回答熟人無聊的提問）
16. This is a call from Laura.
是勞拉打來的電話。
還能這樣說：
A phone from Laura.
Laura wants to speak to you.
17. I'm sorry for letting you wait so long.
很抱歉讓你等這么久。
還能這樣說：
Sorry for keeping you waiting for me such a long time.
I feel sorry that you have been waiting here.
應用解析：
wait a bit 等一下，稍等一等；
wait out 在外面等著，等到……結束；
wait up (for) 熬夜等候