A. Make sentences using the prompts from the box above. 1. instructions / COBOL / not easy / write / in.
It's not easy to write instructions in COBOL.
2. data-processing / expensive / a / set up / area
3. conditions / the /programs under/advisable / test /different
4. the /correctly /a /unusual /time /program / tested / that /write /works /first / it's
5. good / debugger / to / important / use / errors/ a/ fix
6. Visual BASIC /easy / learn
7. C++/ instructions /rather / write / difficult / in
8. OOP / create/ interact/ to / recommended / that / objects/ use / other/ with / to / each
9. create / web/ to/ HTML/ advisable/to /pages/use
10. to / Java/ applets/ to /important/use / write

Подскази по грамматике:
STUDY THE GRAMMAR INPUT THEN DO THE EXERCISES BELOW:
Infinitive Constructions
The infinitive with to is used in the following ways:
To express purpose:
E.g. We use symbolic languages to communicate instructions to the computer. (= in
order to communicate ...) Not: ...for to communicate
After adjectives:
E.g. BASIC was widely used in the past because it was easy to learn.
Machine code is too difficult to write. (= not easy enough to write)
After certain verbs (e.g. afford, demand, plan, agree, expect, promise, appear, hope, refuse,
arrange, learn, try, decide, manage)
E.g. A lot of companies are now trying to develop voice applications for web access.
After the object of certain verbs (e.g. advise, encourage, allow, expect, tell, ask, invite,
want, enable, order, warn)
E.g. HTML allows us to describe how information will be displayed on web pages.
The bare infinitive (without to) is used in the following ways:
After modal verbs (e.g. can, could, may, might, will, would, must, should)
E.g. Unfortunately, computers can't understand spoken English.
High-level languages must be translated into machine code.
After the object with the verbs make and let
E.g. Programs make computers perform specific tasks.

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