It's obvious that ties within the _nuclear family_ are much stronger than those in the extended one.

The scientists feared that the chain reaction would lead to the _meltdown_ of the reactor.

During the Cold War, the two blocks had enough _nuclear_ missiles to destroy our planet many times over.

A new hobby might keep you fully _occupied_ and take your mind off worries.

The empire grew stronger and with the passage of time it _conquered_ the majority of countries in the Mediterranean.

The position of manager is already _filled_. There are no posts available for highly skilled staff anymore.

Adolescents usually think they _know better_ and don't have to follow their parents' advice.

If you have any problems with your computer, turn to Jake and Mike. They _know them_ backwards.

How do you _know_ he's a liar? You haven't even spoken to him.

My heart's bleeding watching my son _long_ for his father so much. He hasn't seen him for three months.

Caroline has made fantastic progress, but she still has a _long way_ to go before she becomes proficient.

He began painting at the age of 15 and it wasn't _long_ before he...