Most of the developing countries are faced with lots of troubles , _____the financial problem is not the worst

Where is my___________ I want to write down the things.

It ________ I arrived at the station ________ I found the train was delayed

What field will your son go into after graduation from Nanjing University?— I’m not quite certain, but he ________ a good teacher of English.[ ]

Excuse me. Could you please show me how to use this MP4 player— .