______ the help of the teacher, the student who wasn’t good at math ______ the difficult problem quickly.
#105063
A
Under; worked out
B
With; worked on
C
Under; solved
D
With; solved
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What ______just now? 
#105248
A
was happened 
B
were happened  
C
happened 
D
happens
(2014·银川一中质检)Little Johnny felt the bag,curious to know what it________.
#105024
A
collected         
B
contained
C
loaded
D
saved