Do you know the boy _____ under the big tree? A lay B. lain C. laying D. lying
the newspaper carefully ,and we’ll find different types of articles on the pages
to advertisements constantly can help to change people’s opinions over time
-May I trouble you with the question? -Sorry, but it is______ my knowledge.
You can never be_____ careful ; the road is icy and slippery.
I can’t fully understand what his music conveys, his performance is quite impressive.