The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.
In this country it is required that anyone who wants to settle here ______ to pass this kind of test.
Don’t treat the vase as if it _______ made of steel.
The little girl walks as if she _________ an old woman.
Don't you think it a pity that John ______ have behaved roughly toward us?
In order to do something meaningful, it’s necessary that you _______ determine what is really important.