Scientists think they have _____ in their attempt to find the causes of some major dieases.
In our class, there are 46 students, half _____ wear glasses.
I have to go to work by taxi because my car_____at the garage.
Her mother would wait for her, ___ late she studied at night.
— Let me tell you something about the journalists. —Don’t you remember ____ me the story yesterday?
He is always making loud noises in public places, ____ made others unhappy.