1.) The solfege syllable for the dominant note G is ____
A. do
B. ti
C. fa
D. sol

2.) which of these intervals is a half step
A. G to A-flat
B. E to F-sharp
C. C to B-flat
D. all of the above

3.) which of these intervals is a half step?
A. G to A-flat
B. E to F-sharp
C. C to B-flat
D. all of the above

4. the interval between any note and its nearest neighbor with the same letter name called _
A. and octave
B. a unison
C. a third
D. a fifth

5. a sharp symbol next to a note makes that note ______
A. one half step higher
B. one whole step higher
C. one half step lower
D. one whole step lower

I'll give you the answer and also I'll provide you with the illustration. It heps to get the idea of sharps, steps, half-steps etc. Very useful thing. You can use it as these topic is tricky enough. So here are the answers:
1.The solfege syllable for the dominant note G is D. sol.
2. C. C to B-flat
3. A. G to A-flat
4. The interval between any note and its nearest neighbor with the same letter name called A. and octave.
5. A sharp symbol next to a note makes that note A. one half step higher
I hope everything is clear with note circle.