―When will she arrive?
―As soon as she ,I’ll let you know.
| A．arrives | B．arrived |
| C．will arrive | D．is arriving |
--- ___________ there any sharks in the aquarium? --- No, we didn’t see any.
| A．Did | B．Had | C．Have | D．Were |
It’s not good for people __________ waste water (污水) into the river.
| A．to put | B．putting | C．to pour | D．pouring |
Every student in Miss Chen’s takes turns __________ the classroom every day.
| A．clean | B．cleans | C．cleaning | D．for |
Please tell your partner _____________ make your favorite smoothie.
| A．what to | B．how to | C．to how | D．to what |
The music is very wonderful, she often listens ___________.
| A．to it | B．it to | C．for it | D．it for |