单项选择题

In case he______before I get back, please ask him to wait.

A．would arrive
B．should arrive
C．arrives
D．arrived
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单项选择题
You are welcome to stay with us______you share the rent.
A．as soon as
B．as long as
C．as much as
D．as well as
单项选择题
______by the news of his father’ s death, he could hardly utter a word.
A．To be stunned
B．Stunned
C．To stun
D．Stunning
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