It __________ last night for all the trees are covered with snow now.A.must have snowed B.should have snowedC.may have snowed D.ought to have snowed
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It __________ last night for all the trees are covered with snow now.A.must have snowed B.should have snowedC.may have snowed D.ought to have snowed
It __________ last night for all the trees are covered with snow now.
A.must have snowed B.should have snowed
C.may have snowed D.ought to have snowed
It __________ last night for all the trees are covered with snow now.A.must have snowed B.should have snowedC.may have snowed D.ought to have snowed
It __________ last night for all the trees are covered with snow now.
A.must have snowed B.should have snowed
C.may have snowed D.ought to have snowed
选项是A
must have snowed表推测【昨晚一定下了雪】,根据for all the trees are covered with snow now.
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A
必然的很冷
答案应该是A .
A 这里must 表猜测