We all had a lot of fun at the barbecue yesterdayPity you weren’t there—I really should have gone with you, but I ________ on some remaining problems

Here is the tower, ______ top you can have a good view of the whole city.

We do our best to be careful and prevent bad things from happening,but most of us will________ find ourselves in a situation where we or someone else needs help

We are confident that the environmenr byour further efforts to reduce pollution

Peter，is there anything else you want to know about China—Yes，I am still wondering __________ .