There are five pairs _______, but I'm at a loss which to buy.
It was so dark in the cinema that I could hardly my friend.
With the loud noise going on in the workshop, I can hardly on my lessons.
At first, it seemed that everything went well, but all of sudden, the ship hit _________ iceberg.
Bob and Tom have nothing in ______ at all .How can they be good friends ?
They all wanted to stop working because they were tired, but of them would say so.