________a large group, your tone should be clear and loud.
A. When addressing
B. While addressing
C. Upon addressing
D. When you address
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He acted________nothing had happened to him.
A. as if
B. as
C. when
D. if
I won’t go there________ you help me look after my child.
A. if
B. unless
C. because
D. or
They went________ they could find a stream.
A. where
B. wherever
C. when
D. unless
He shook his head________he wanted to say “No”.
A. as
B. as if
C. because
D. since