The news about the missing plane broke many people’s hearts. We hope the passengers can come back home safely.

ter studied hard at school when she was young, which contributes ________ her success in her career.

24．Last Monday，while the studentson the playground watching the national flag being raised，something unexpected

You should take____ umbrella if it rains.

The reason ___ he didn’t attend the meeting yesterday was ___ his child had fallen ill.