What was your brother like when he was young? — He _______ be quiet, but now he’s very outgoing.

The children took a trip the Great Wall last week. [ ]

It was quite a long time________ I made it out what had happened.

There are days in a week. Theday is Saturday.

He did not write _________,though(尽管)he had______ ­­­­­­­­­­­。