There are some trees ______ our classroom. [ ]

How was your school trip on the farm?—It couldn’t be worse! I don’t want to talk about it.

Sorry, Doctor Smith isn’t here right now. —May I ____ a message on his desk?

Not until I came home last night _____to bed.

What’s this ________ English?—It’s a card．I got (得到) it _________ the morning.[ ]