Transportation hasn’t really 1) _ a lot in the past 100 years.  1 next
2 in
3 on
4 front​
до

+                                           ?                                         -

i was                                 was i?                               i was not(wasn’t)

he/she/it was                   was he/she/it?                     he/she/it was not (wasn't)

we were                             were we?                         we were not (weren’t)

you were                           were you?                         you were not(weren’t)

they were                           were they?                         they were not (weren’t)

будь так добр, волошин, поставь мне "лучшее решение"!

they saidthat the bookwas translated from germanin 1989.

  how long have you been trying to find a job?

for three years. it was really difficult.

how many jobs have you had?  

about thirty, maybe more i have been doing everything.

how long have you been standing here today?  

i have  been waiting since 8: 00 this morning, and i'm freezing.  

1)мы знаем,что он работает над проблемой космической связи. 2)если вы совершите,даже малейшую ошибку на компьютерном языке, разговор не получится, и вы обязаны начать с заново.3)читальный зал библиотеки конгресса занимает большая коллекция справочников.