单项选择题
The man（）Mary was so tall that she could hardly see the show.
A.in front of B.in the front of C.at the back of D.at the beginning of
单项选择题 The league secretary and monitor（）asked to make a speech at the meeting.
单项选择题 The Japanese,（）average, live much longer than the Europeans.
单项选择题 The girl sometimes has difficulty（）what the teacher says in class.
