_______ breakfast, he goes to school. [ ]

Can you come and give us a talk on Thursday or Friday?—I am afraid ______ day is possible. I am very busy these days.

Did you read a book about customs last week?– Yes, I found ______ very useful to know the customs of foreign countries.

You had better finish _______ your homework.

May I speak to John? —Sorry, he Japan. But he in two days.