问题描述：
his jokes made us _______.
a.to laught b.laughing c.laughed d.laugh
it was raining hard ,but none of them said they ______ (stop)working in the fields.
a.to laught b.laughing c.laughed d.laugh
it was raining hard ,but none of them said they ______ (stop)working in the fields.
问题解答：
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