—Does he like tea or coffee? —Sorry. I don’t know ______ he prefers.
—Does he like tea or coffee?
—Sorry. I don’t know ______ he prefers.
–Could you tell me the way to ____ Johnsons, please?--Sorry, we don’t have ____ Johnson here in the village.
____ matters most in learning English is enough practice.
If Joe’s wife won’t go to the party, ____.
After two years’ research, we now have a ____ better understanding of the disease.
____ he had not hurt his leg, John would have won the race.