3道高二英语题
19.He wondered if he could slip out of the lecture hall without anyone ______
A.noticing
B.noticed
C.to notice
D.being noticed
20.He spoke in such a high voice_______out in the street.
A.as to be heard
B.to be heard
C.as to hear
D.to hear
21.Excuse me,could you tell me how to get to the Grand Hotel?I thought it was on this corner,but I seem to ______a mistake.
A.make
B.be making
C.having made
D.have made