Only when the teacher walked into the classroom ________ that she had left the speech note at home.
A. she realized B. has she realized
C. she has realized D. did she realize
________ from the north side, the beautiful water fall just looks like three fairies with long hair.
A. Viewed B. Viewing
C. Having viewed D. To view
The audience listened with full attention, ________ to miss any point．
A. not trying B. trying not
C. to try not D. not to try
There were many talented actors out there just waiting________.
A. to discover B. to be discovered C. discovered D. being diseovered
________ in school uniforms, the students seem to be in good spirits.
A. Dressed B. To dress
C. Dressing D. Having dressed
When he saw the front cars ________ in the traffic jam, he decided to make a detour (绕路).
A. caught B. to be caught
C. be caught D. to catch
