That little boy has some trouble  _______ in public.
#96421
A
to speak
B
speak
C
speaks
D
speaking
推荐题目
Physics is difficult ____.
#98661
A
to be learned
B
to learn
C
to be learning
D
to be learn
The poor old beggar looked forward to _____ by the other beggars.
#97871
A
not playing a trick on
B
not being played a trick on
C
playing not a trick
D
being not played a trick
 Paul does nothing but _____ all day long.
#97507
A
play
B
to play
C
playing
D
played