用is和are 填空。(1)There________a boy at the Great Wall.(2)There _______three books under the apple.(3)There________a cat in the box.(4)There_______some ducks in the boat.(5)There_______some clothes on the line.
你去上学,你想知道现在几点钟了,你会问:________ A.What's your name? B.What's that? C.What time is it?
eight - one =________ A.seven B.four
twelve ÷ six =________ A.three B.two
three × three =________ A.nine B.six
four + five =________ A.nineB.ten