daybreaking,
We do the 5 oral questions at the beginning of each lesson, and then we do the entire lesson.

However, we do most of the entire lesson orally. This means that we do the sections marked as "Written Exercises" orally too. I only choose one small section in each lesson to have my kiddos do in writing. To do the written exercises orally, I just have my kiddos say the answers instead of writing them. I often read the sentences aloud in the exercises, and then have my child quickly say the answers right after me. My reading parts aloud to them keeps their attention and keeps the lesson moving quickly. Before the lesson begins, however, I have my kiddos read the first part of the lesson to themselves. This way they are prepared for what is to come.
We often diagram together on the white board, moving very quickly through the lesson. I might just draw the diagram lines and have my kiddos point and say where the various words will go. This procedure has allowed us to keep Rod and Staff English very manageable. Even at the upper levels like English 6-8, we are moving very quickly through the lesson and not exceeding 30-40 min. total on most days for both oral and written work.

It is true though that review lessons and writing days take longer.
I do think another factor around English 4 is that students have not really cemented their English skills yet, so their answering doesn't come as quickly. They are having to think harder to remember and English is not naturally a part of their skill-base yet. So, for some kiddos it may take longer at the English 4 and 5 level until they become more familiar with what is being asked of them. Don't despair! If your lessons are running long, you could do evens or odds for awhile. However, in the long haul I'd try not to make skipping a practice. I would set a goal not to exceed 30 min. at this stage. If you see you are coming close to that time and are not done for the day, omit any written work and just do it all orally. This is another technique I use when running behind.
Blessings,
Carrie