— What’s that terrible noise ?— The neighbors _____ for a party. 

Scientists have created GM tomatoes which ______ fresh for 45 days, three times as long as normal tomatoes.

The phone had been ringing for three minutes before it            .

The person we spoke to ____ no answer at first．

―What were you doing when I called you yesterday afternoon?―I ________ my homework and I was starting to take a bath.