1. Reagan"s doctor suggested that he — a short rest at Camp David

2. will take

3. would take

4. take

5. took

6. taken

1. did

2. Had done

3. was doing

4. do

5. done

1. as well than

2. best than

3. as better than

4. as well as

5. as good as

1. its energy level

2. as its energy level

3. it is energy level

4. the energy level of its

5. as it is energy level

1. in

2. at

3. by

4. With

5. no preposition is necessary