You can only be sure of _______ you have at present;you cannot be sure of something _______ you might get in the future

e man lay there, _________with a badpain

Andy, could I borrow bicycle— is broken. You can ask Carmen.

It was playing video games that took the boy too much time that hehave spent learning．

On my way home in the street I saw a lady ________ I thought was your aunt.