英语,单项选择,请说明
1.What animal do you like ______,a dog,a cat or a pig?
A.well B.better C.best D.very
2.He traveled all over the world _____ he had a man-made leg.
A.if B.as C.because D.though
3.Not only I but also Tom and Jack _____ interested in English because it _____ useful.
A.is,is B.is,are C.are,is D.are,are