The present perfect (have p2) or present perfect continuous (have been V-ing) 1. David who (enter) _______________ employment since leaving school will go to university soon. 2. They (use) ________________ the Internet to look for the courses which offer full scholarships.
2 câu trả lời
1. has been entering ( nhấn mạnh tính liên tục, có "since")
2. have used ( không có dấu hiệu nhận biết=> thì HTHT)
