Look ! A boat is passing ________the bridge .
| A． through | B． on | C． under | D． across |
-- ________ you tell me how to write it in English?
-- I'm sorry, I can't.
| A．Can | B．Must | C．May | D．Need |
Look! They ________ in the hallway.
| A．run | B．ran | C．are running | D．will run |
Can you help me ________ my homework?
| A．of | B．with | C．to | D．for |
The teachers ________ on the blackboard with chalk in the future.
| A．isn't writing | B．didn't write | C．don't write | D．won't write |
- ________ book is this?
-- It's Mary's.
| A．Whose | B．Where | C．How old | D．How many |