I bought three books, but none of _______ is interesting.
--- I don’t think this TV set is of good quality. Can you replace it with a new one?--- _______. But I have to talk to my manager first.
---What’s that noise? ---Oh, my God! I ________ to turn the tap off after I brushed my teeth.
____ almost the whole time of mine, the work made me extremely tired.
The police are trying to find out the ____ of the woman killed in the traffic accident.
— I heard they went skiing in the mountains last winter.— It ________ true because there was little snow there.