—The boys hid themselves in the places ________ they couldn’t be found.—How naughty(淘气的) they are!
The wet weather will continue tomorrow when a cold front _____ to arrive.
We had a party last month and it was a lot of fun, so let’s have _____ one this month.
The effective communication ability for a writer is to get the knowledge out of his head and ____ readers’ heads.
How much _____ she looked without her glasses!
---It’s the office! So you _____ know eating is not allowed here. ---Oh, sorry.