10. Choose the appropriate form of the word to complete the sentences.

complication, complicate, complicated, complicating

1. There can be many ______ involved in setting up a computer in an old building.

2. It is sometimes a very ______ process getting into a computer installation for security reasons.

3. It is sometimes very _____ to explain computer concepts.

11. Crossword

vertical

1. difficult

2. being between two other things

3. in computer science it can be binary

4. a feature of C language

5. happening often

horizontal

1. block

2. perform (v.)

3. It can be in a shop and in computer science.

4. package

5. unit in a list

6. array characteristic

7. tree characteristic

8. It can be conducted by scientists.

9. a whole number and not a fraction

			1
		1
	2								3
4							3
		5
							2			4
			6
										7
														5
									8
													9