这几个词的意思是什么，为什么容易混淆，我们将通过例句为大家解答。
听完节目后，你能用以上单词和短语完成这个填空练习吗?
Sam: Amy, I can ____ you the report will be done by tomorrow.
Amy: Excellent, and I will ____ it’s checked on the same day. What about the delivery of the hard copy?
Sam: We should use the courier service to ____ tracked delivery.
Peter: Yes, courier companies are ____, and are much more reliable than the post office.
Amy: That’s it then. Let’s ____ everything goes to plan. There’s no room for mistakes.