The train leaves at 6:00 pm, so I have to be at the station_____5 :40 pm at the latest.[ ]

Mr. Wang often ________ his dictionary in the library.

There is a ______ tree in our school.

There is salt in the kitchen. Would you like to go and get , Tom?–OK !

I’ veusing plastic bags when shopping.– You’ re right. It’ s good for our environment.