What ______ had Bob walked farther, as far as the river bank?
This kind of cell phone is very common and I also have_________.
Mr. Smith couldn’t open the door because his naughty boy _______ it from the inside
I know little about the accident because not much_________ about it up to now
I’ve been away for only three years, _____ I can hardly recognize my hometown
In China, you _____ vote when you are 18.