给答句配上疑问词。（选出正确的疑问词并将其序号写在横线上）
| A．Where | B．What time | C．Who | D．How many E. How F. What |
当你想知道那些是什么时，应问：_________
A. What are those?
B. What is that?
当你想表达“鸭子们正在往这边来”时，应说：__________
A. The ducks are come now.
B. The ducks are coming now.
当你想表达“这些是纸花”时，应说：___________
A. This is paper flowers.
B. These are paper flowers.
当你想表达“它们正藏在树下”时，应说：_________
A. They are hiding the tree.
B. They are hiding under the tree.
当你想表达“它们很淘气”时，应说：________
A. They’re lovely.
B. They’re naughty.