The boy isn’t old enough ________ with the difficult problem by himself. 
#50365
A
deal
B
deals
C
dealing
D
to deal
推荐题目
_________ green or _________ in a light green room _________ good for us.
#49836
A
Wear; sleep; is
B
Wearing; sleeping; are
C
Wear; sleep; are
D
Wearing; sleeping; is
Students should pay attentions to ________ the teachers in class.
#50305
A
hear
B
listen to
C
listening to
D
hearing of