1. When had he entered the university?
2. Where had he entered after he had finished the school?
3. Who had entered the university after he had finished the school?
4. Had he entered the university after he had finished the school?
5. I wonder, if he had entered the university when he had finished the school?
19) c) was travelling
20) d) was made
21) a) monitored
22) b) were passing
23) was waiting
24) had happened
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