“How was ______ they discovered theentrance to the underground palace” “Totally by chance”

You seem busy these days—Yes I’m looking for a house It’s really not easy tofind _____ with four bedrooms

In some countries, treatments for A (H1N1) flu were neither _____ nor effective, and many patients died because of infection. [ ]

―________ you _________ the chief editor at the airport? ―NoHe _______ away before my arrival

Would you please give me_______ my English study