改成一般疑问句,再做肯定回答1,She is looking at the zebra.2The policeman i

1 She is looking at the zebra。 Is she looking at the zebra? ----Yes ,she is 。2 The policeman is watching the car。 Is the policeman watching the car ? ----Yes , he is 。3 The birds in the tree are eating now。 Are the birds in the tree eating now ? ---- Yes , they are 。4 I am playing cards。 Are you playing cards? ---- Yes , I am 。5 The sun is shining。 Is the sun shining? ---- Yes , it is 。