• Prеsent perfect vs Past simple 11 Read the theory. Find examples in the text on p. 30.
• We use the present perfect for actions which started in the
past and continue up to now, or for personal experiences,
I've lived here for a long time. I've been to Almoty.
We use the past simple for actions which happened in the
past. I moved here in 2004.​

Little- less- least

1. you should  try to find out as many facts as possible about this expedition to the antarctic. 2. the team of experts is to analyze the present situation connected with our city's ecological problems. 3. the young engineer was allowed to apply the mobile equipment in his field experiments. 4. this production process had to be further improved by new technical means. 

 

1. вы должны попытаться узнать так много фактов насколько возможно об этой экспедиции в антарктику. 2. команда экспертов должна проанализировать текущую ситуацию, связанную с экологическими проблемами нашего города. 3. молодому инженеру разрешили применить мобильное оборудование в его полевых экспериментах. 4. этот производственный процесс должен был быть далее улучшен новыми техническими средствами. 

 

вроде правильно, но не уверена, а перевод  

They build  houses  every  year. they are building a house now. they will  built  this house next year. by the time  she  comes,  they have already  built  a house. when he arrived in  this city,  they … какая-то ошибка в варианте

1. can

2. could

3. were able 

4. can

5. are able

6. can

 

(не уверенна)