Sure, let's fill in the blanks with the correct options:

Speech is one of the most important (1) **C. ways** of communicating. It consists of far more than just making noises. To talk and also to (2) **C. be understood** by other people, we have to speak a language, that is, we have to use combinations of (3) **B. sounds** that everyone agrees to stand for a particular object or idea. Communication would be impossible if everyone made up their own language. Learning a language properly is very (4) **B. important**. The basic (5) **C. vocabulary** of English is not very large, and only about 2,000 words are needed to speak it quite (6) **C. well**. But the more ideas you can (7) **C. express** the more precise you can be about their exact meaning. Words are the (8) **A. main** thing we use in communicating what we want to say. The way we (9) **B. say** the words is also very important. Our tone of voice can express many emotions and (10) **A. show** whether we are pleased or angry, for instance.

So the complete passage with the correct options is:

Speech is one of the most important (1) **ways** of communicating. It consists of far more than just making noises. To talk and also to (2) **be understood** by other people, we have to speak a language, that is, we have to use combinations of (3) **sounds** that everyone agrees to stand for a particular object or idea. Communication would be impossible if everyone made up their own language. Learning a language properly is very (4) **important**. The basic (5) **vocabulary** of English is not very large, and only about 2,000 words are needed to speak it quite (6) **well**. But the more ideas you can (7) **express** the more precise you can be about their exact meaning. Words are the (8) **main** thing we use in communicating what we want to say. The way we (9) **say** the words is also very important. Our tone of voice can express many emotions and (10) **show** whether we are pleased or angry, for instance.