Perfect Tenses. Exercise 2.
Заполните пропуски подходящими по смыслу глаголами в правильной форме.
To translate, not to speak, to furnish, to visit, to receive, to determine.
1. They ... English since last year.
2. Specialists ... the main properties of the substance already.
3. She just … the letter from her friend.
4. John … by his group mates by yesterday evening.
5. Students … the article for half an hour.
6. We … with all the necessary information by tomorrow.