When ______ by the teachers, a student tends to study harder than usual.
#95451
A
to be praised
B
praising
C
praised
D
to praise
推荐题目
 Though ______, many laws of nature exist.
#97974
A
not having been discovered
B
having not been discovered
C
not having discovered  
D
having not discovered
With all the novels        ,he left the library.
#96376
A
orrowed
B
orrowing
C
o borrow
D
orrow
Helen had to shout_____.
#97588
A
making herself
B
to making herself hear
C
making herself heard
D
to make herself heard
         to work overtime that evening, I missed a wonderful film.
#94855
A
Having been asked
B
To ask
C
Having asked
D
To be asked