Образуйте сказуемое формы Present Perfect (не забываем про глагол have/has) 1) He (arrive) just at the university. 2) My friends (be) to Germany for a month. 3) Oliver (not do) his homework yet. 4. My sister (pass) just the exam. 5. My family (come back) just from China.
2 have been
3 hasn't done
4 has just passed
5 has just come back