单项选择题
A．No, I'm not B．Yes, I'm not C．No, I am D．Yes, I am
The school is more beautiful now than（）in the past. A．i...
单项选择题The school is more beautiful now than（）in the past.
A．it is B．that was C．it was D．this is
We should（）study hard during our time in the university...
单项选择题We should（）study hard during our time in the university.
A．all B．every C．some D．any
The book is a（）for students of science. A．necessary B．m...
单项选择题The book is a（）for students of science.
A．necessary B．must C．important D．useful
