思考与探究 I.单项选择。 B )1.-Must I visit Lucy on Sunday,Mom? —No,y0u A.nustn’t B.needn’t C.can’t D.shouldn't A )2.The boy looksafraid when he sees the dog. A.kind of B.kinds of C.a kind of D.of kind 导航页导航页 思考与探究 Ⅰ. 单项选择。 ( )1. —Must I visit Lucy on Sunday, Mom? —No, you . A. mustn’t B. needn’t C. can’t D. shouldn’t ( )2. The boy looks afraid when he sees the dog. A. kind of B. kinds of C. a kind of D. of kind B A