—Do you think the thief entered through the back door? —No, if he had, I don’t believe he ______ the living-room window.
Don't try to get off the bus ____ it has stopped.
To understand the grammar of the sentence,you must break it______ into parts.
He will tell you about it ____ you get there.
The classroom is big enough , but we’ll have to move if we have more students.
We shall go ____ you are ready.