Many children think they are ______ with when their parents are trying to show concern about them.

.Emergency line operators must always ______ calm and make sure that they get all the information they need to send help.

—How is Dennis getting along with his work?—Well, he could always __________ a new idea for increasing sales. 

This book is said to be a special one, which __________ many events not found in other history books．

The trade union in this industry are ____ any reduction in wages.