The answers are:
6.1. b. in addition
6.2. a. although
6.3. b. once again
6.4. b. before
6.5. a. consequently
These choices contain the appropriate cohesive devices for the given functions:
6.1. "In addition" is used to add information.
6.2. "Although" is used to show difference or contrast.
6.3. "Once again" signals similarity by implying something has occurred in the same way again.
6.4. "Before" indicates temporal sequencing.
6.5. "Consequently" shows a result or effect.
