Прочитайте эти вопросы и заполните пробелы, используя глаголы из скобок в прошлом perfect continuous. 1. he for three hours? (wait) 2. your friends at this university for five years. Was it difficult? (study) 3. anybody ? I could smell cigarettes. (smoke)
had he been waiting for three hours?had your friends been studying at this university for five years. Was it difficult?had anybody been smoking? I could smell cigarettes.