14. Shall I tie the parcel or stick it by tape?
我是把包裹捆上还是用胶带粘上呢?
还能这样说：
How should I pack up the parcel, tie it or stick it using tape?
Can you tell me how to pack it, tie it or use tape?
应用解析：
get tied up 结婚;
tie in 使联系;使结合成一整体;使配合;
tie to 信赖;迷恋
15. Make sure the parcel is tied up before you mail it.
包裹在邮寄前一定要捆好。
还能这样说：
The parcel must be tied up before mailing it.
You must be sure of tying up your parcel before posting it.
应用解析：
as sure as eggs are eggs/as sure as I'm standing here
的的确确;千真万确
16. What about our express service?
办加急好吗?
还能这样说：
Would you like our express service?
Do you want an express service?
应用解析：
be in the service 在部队服役;
marriage service 结婚仪式
17. We charge 30% extra for express.
加急服务要加收30%的费用。
还能这样说：
You should pay more 30% fee for express.
There is another 30% charge for express.
应用解析：
extra allowance 特别津贴;
extra hand 临时雇工;
extra-fine 超级的，极好的