It is this kind of exciting trip _____most of my classmates only dream about.

I’m not sure whether this is the room ________ she left her dictionary.

We’ll have a picnic near the river tomorrow it rains heavily.

I stood in the middle of the room, staring at the toys, and in my imagination, the toys _________.[ ]

We really shouldn’t use plastic bags any more when shopping.——_____ It’s important to protect our environment.