The engineers have rejected the employers' proposals to end the strike and the other workers have come out in _____.
—I phoned you at 7 yesterday evening but nobody answered. — Oh, I ______ my dog in the park then.
So far all cloned animals have suffered from some different serious disorders, ______ dying soon after birth.
The fog was so heavy this morning that drivers could hardly ______ the things just ten meters away from them.
I ______ a flu when I was on a spring outing with my classmates.
The weather that day may not be as good as expected, in ________ case we will have to put off the event.