You must get there within an hour. There should be no ________ in sending this information to him.

A. question

B. problem

C. quarrel

D. delay

No one has yet succeeded in explaining the ________ of how life began.

A. cause

B. problem

C. reason

D. puzzle

If by chance someone comes to see me, ask him to leave a ________.

A. message

B. letter

C. sentence

D. notice

It won't make much ________ whether you agree or not.

A. difficulty

B. trouble

C. difference

D. matter

There are usually at least two ________ of looking at every question.

A. means

B. directions

C. views

D. ways

This is not a match. We're playing chess just for ________.

A. habit

B. hobby

C. fun

D. game

Mr. King had some ________ of his daughter's examination result as soon as he took a glance at her face.

A. thought

B. news

C. meaning

D. idea

The policeman is offering a ________ to anyone who can give information about the lost children.

A. prize

B. reward

C. price

D. money

Many countries are increasing their use of natural gas, wind and other forms of ________.

A. energy

B. source

C. power

D. material

In which ________ are you going, north or south?

A. road

B. street

C. way

D. direction