句子翻译这部电影有助于帮你了解中国的过去和现在。
This film helps you _______ ______ China’s _____ and ________.这幢教学大楼已经投入使用5年了。
This teaching building has____ _____ ____ ______ five years.他已经和她结婚三年了
He has _____ married _______ _______ _______ three years ago.实际上，她是个初中生。
_____ ______, she is a _____ _____ school student.飞机已经起飞了。
The plane has_____ ______.