Problem: If "Adam can't leave work here until Bob arrives to replace him. If Bob had left home for work on time, he would be here by this time.", is "Adam would be here by this time." correct?

Answer: no


Problem: If "Mama came over and sat down beside Alice. Gently she stroked her hair and let the child weep.", is "She stroked Mama's hair and let the child weep." correct?

Answer: no


Problem: If "I was trying to open the lock with the key, but someone had filled the keyhole with chewing gum, and I couldn't get it out.", is "I couldn't get the chewing gum out." correct?

Answer:
yes