请根据首字母或中文写出符合题意的单词或词组；注意正确形式，若有误概不给分。
Now our headmaster is d___________ an important speech to all the students in the hall.
In some poor African areas, many children died of h_________________.
The soldiers were well e________________ with weapons（武器）and ready to start.
U______________, he fell off his bike and broke his leg.
The man who was r___________ to in her speech is a great scientist.
He got the first prize in the contest, so his parents _________ _____________ _________ (对…满意的) his performance.
The other day I __________ __________ (偶然遇见) one of my good friends in the street, whom I hadn’t seen for years.
He is very rich , but he never _________ __________ ____________(瞧不起) the poor.
The writer ___________ her attention __________(集中于) her work, so she didn’t notice the man enter the room.
The flood washed away the road, so they were ______ ______(断绝，隔绝) from the outside.