recommend

[Anonymous]

Hi,
Please check these sentences and correct them.

1-1. He recommended promoting Jane to (the) supervisor.
1-2. He recommended Jane as (the) supervisor.

2. It is recommended that these vehicles are/be fueled with unleaded gas. ["Are" is incorrect, isn't it?]
3. It is recommended that you see your doctor every 2 weeks.
4. It is recommended to store this medication in the fridge.
5. It is recommended to register for the course early.

6-1. It is recommended that you frequently change your password.
6-2. It is recommended that you change your password frequently.
6-3. It is recommended to frequently change your password.
6-4. It is recommended to change your password frequently.

Thanks a million.
Ann

[Anonymous]

1-1. He recommended promoting Jane to () supervisor.
(Or, ...to the position of supervisor).
1-2. He recommended Jane as (the/a) supervisor.
(No article sounds best).
2. It is recommended that these vehicles are/be fueled with unleaded gas. ["Are" is incorrect, isn't it?] (Be is correct).

(The following sentences are all OK).
3. It is recommended that you see your doctor every 2 weeks.
4. It is recommended to store this medication in the fridge.
5. It is recommended to register for the course early.

6-1. It is recommended that you frequently change your password.
6-2. It is recommended that you change your password frequently.
6-3. It is recommended to frequently change your password.
6-4. It is recommended to change your password frequently.