1. is taking / has been taking;2. are playing / have been playing; 3. have been learning / is improving;4. is coming;5. has been staying / is trying;6. is working / is preparing / has been writing;7. is doing;8. Are they still discussing? / have been discussing9. are going up / have been rising10. is blowing / has been blowingPresent Continuous (am/is/are глагол+ing) используется для выражения действия, которое происходит в данный момент, или для запланированных действий (например, в №4).Present Perfect Continuous (have/has been глагол+ing) используется для выражения действия, которое началось в прошлом и продолжается до настоящего момента, т.е. еще не закончилось).