A.Responsible criteria
B.Multiple criteria
C.Emphasis on the exception
D.Accuracy
E.Understandability
第3题
A.must have watered
B.must be watered
C.must water
D.must be watering
第4题
On no account ______ to anyone.
A、my name must be mentioned
B、must my name mention
C、must my name be mentioned
D、my name must mention
第5题
It ______ last night, for the ground is wet.
A、must rain
B、must be going to rain
C、must have rained
D、ought to rain
第6题
A.needn’t… must
B.need… need
C.must … must
D.must… needn’t
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