单选题100题1. Which is _, the sun, the moon or the earth? - Of course the moon is. A . small B. smaller C. smallest D. the smallest 2. -How many pens are there in your pencil-box? - _.A. No B. None C. Neither D. Either 3. -When will they _? -_ the seventh of July.A. arrive; On B. arrive at；On C. arrive in；In D. arrive；In 4. Mr. Smith has _ sons and his _ son i
