17,19 думаю сделаете​

  1. a final group of utilities worth mentioning is designed (present simple passive) for backing up and cleaning up hard disks.2. a data base is (present simple) simply a collection of date that is stored(present simple passive) on one or more computers. 3. the operating system must first be loaded(present simple passive with modal verb) into primary storage.4. multitasking capabilities were once found only on minicomputers and mainframes. (past simple passive)5. utility programs monitor how often and how quickly an application program is being executed compared to all the other programs in the system at the same time. (present simple; present continuous passive)

1. в конце учебного года студенты экзамены по предметам по специальности. present indefinite tense/ to have. 2. в кэмбридже существовала популярная традиция в полдень приглашать друзей на чай, горячие тосты с маслом и джемом. past indevinite tense/ to be. 3. вскоре из этих комнат откроется приятный вид на институтский сад. future indefinite tense/ to have a pleasant outlook. 4.  университет дружбы народов им. патриса лумумбы начал работать  c  небольшого количества      студентов из азии, африки и латинской америки. past indefinite tense/ to start.

1) john often goes to the theather on sundays

2)they usually go to the park twice a week

3) how often do you play baseball?

hello

hi

i know, that you like travell very much.

yes,i like it.it is really exating.

where have you been?

oh,i travelled very much.i was in difrent country.my favourite city is london.it is the most beautifull town in the world.there are so nice moiment in london.you can not imagine this town,if you have not been in london.

greate.thank you.