Question

I originally studied / have studied engineering at university.  2. I've been trying / have tried to find a permanent job for a long time.
3. In my first job, I was / I have been responsible for marketing. 
4. The last job I applied / have applied for required applicants to speak some Chinese. 
5. I have been waiting / have waited for a reply for several weeks and I still have not received / did not receive any answer. 
6. How long have you been learning / have you learned English?  You speak really fluently.  ​