以下关于我国的国家结构形式的说法中,正确的是:①全国只有一部宪法 ②国家有中央政权机关,地方也有自己的中央政权机关 ③公民只有一种国籍 ④中央政府统一行使外交权,地方政府无任何外事权
As Polly observed the passengers on the train, she _______that she was being watched by a tall man in a dark coat.
Kathy ______ a lot of Japanese while working with some Japanese engineer.
— Tom was late for class this morning again. — You know, _____.
For most people, life in __ Britain is very different to that lived by their grandparents.
It _____ to be a fine day the day before yesterday.