单项选择题
A.So is B.So does C.Nor is D.Nor does
Jane likes singing. We often hear her（）after classA.sin...
单项选择题Jane likes singing. We often hear her（）after class
A.sing B.to sing C.sings D.sang
James Watt（）the steam engine. A.was inventing B....
单项选择题James Watt（）the steam engine.
A.was inventing B.invented C.had invented D.has invented
It is（）to interrupt the others while they are talking.A...
单项选择题It is（）to interrupt the others while they are talking.
A.rough B.rude C.polite D.troublesome
