[ ] English fluently, I can travel everywhere [ a) Speaking b) Having spoken c) Spoken ]	Speaking = present participle
[ ] earlier I could avoid traffic jams [ a) Left b) Having left c) Leaving ]	Having left = perfect participle ← 2 points in time (2 I avoided traffic jams because 1 I had left earlier)
[ ] by poor weather conditions the planed landed 2 hours late [ a) Delayed b) Being delayed c) Delaying ]	Delayed = past participle 
[ ] I went to sleep earlier [ a) Exhausted b) Exhausting c) Having exhausting ]	Exhausted = past participle (2 actions happening at the same time)
[ ] this workshop twice already, we decided to go to a cafe [ a) Attending b) Attended c) Having attended ]	Having attended = perfect participle ← 2 points in time (2 actions happening at the same time)
[ ] on the plane I was ready for the next meeting [ a) Sleeping b) Slept c) Having slept ]	Having slept = perfect participle ← 2 points in time (2 I was ready because 1 I had slept)
[ ] by the terms of the contract we had to ask many more questions [ a) Having being confused b) Confused c) Been confused ]	Confused = past participle (little difference between 2 actions probably happening at the same or one after the other. For clarity, prefer past participle.)
[ ] we'd be late I rang to say we'd be late [ a) Realised b) Realising c) Having realised ]	Having realised = perfect participle + Realising = present participle (little difference in whether 2 actions take place one after the other or at the same time)
[ ] by our CEO's comments the PR officer decided to cancel the press conference [ a) Ashamed b) Having been ashamed c) Ashaming ]	Ashamed = past participle (the officer was probably still ashamed when he cancelled the press conference ← focus only on the result rather than cause and result for simplicity)
[ ] in Germany with extreme diligence these goods are very reliable [ a) Produced b) Having produced c) Producing ]	Produced = past participle