By the time he realizes he ____into a trap, it’ll be too late for him to do anything about it.
Is this watch _____ you wish to have _____?
There are two small rooms in the house, _____ serves as a kitchen
This is the very knife _____ I used to cut apples yesterday.
---- Is it high time that we _____ on the school building? ---- Yes, it _____.
The cost of sales makes up a large part of the prices that _____.