To their surprise, they found the lecture given by the famous professor easy ______. 
#96616
A
to be understood
B
to understand
C
understanding
D
understood
推荐题目
 The reason why Malaysia Airline Flight370 disappeared remained_____.
#88645
A
look into
B
to be looked into
C
looking into
D
to look into
The waiter greeted me with a big smile and _____ us by the window. 
#98748
A
seating
B
seated
C
to seat
D
being seated
--- If John does not come to work on time, he may be fired.---Surely he is not so foolish _________ that.
#96985
A
as not to realize
B
as not realizing
C
that doesn’t realize
D
as to realize
The picture ________in my bedroom is painted by a famous artist.
#88308
A
hanged
B
hung
C
being hung
D
hanging