--You went late the stadium yesterday evening, didn't you? --Yes, my wife was a little late _________ the supper.
He ______ be a history teacher.
This book ______ Tom’s father’s, because his name is on the book.
This question is ______ easy, all the students can answer the question.
I don’t know _________.
When we practice speaking English, we often end up _____ in Chinese.