There is still a strong argument ________ mobile phones are a particular risk to children.
#67475
A
when  
B
which  
C
that 
D
what
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Although she felt tired, she didn’t stop working.
#41083
A
She felt tired, she didn’t stop working.
B
She felt tired, so she stopped working.
C
But she felt tired, she didn’t stop working.
D
She felt tired, but she didn’t stop working.
 Look, a group of students are playing the violin there, _______ their teacher as the conductor.
#66829
A
in front of them stand
B
in front of them stands
C
in front of whom standing
D
in front of whom stands