1 . Nearly all the countries globally________ (strike) by the coronavirus up to now, with over 600 million people infected worldwide. (所给词的适当形式填空)

2 . Jimmy told Bob in the note: “When you ______ (strike) the match to light your cigar, I saw it was the face of the man wanted in Chicago.” （所给词的适当形式填空）

3 . It ________ (strike) her one day, when she was walking home from school, that she hadn't thought about her weight for over a month. （所给词的适当形式填空）

4 . On hearing the girl________ (strike)by a truck has been sent to hospital by an ambulance, many people volunteered to donate blood. (所给词的适当形式填空)