根据单词首字母或汉语提示，用所学单词的正确形式填空。
小题1: Plant the seeds at a ______ (深度) of ten centimetres.
小题2:Julia felt _____ (陷入困境) in a dead end job.
小题3:The police are questioning the driver who has _______ (目击) the accident.
小题4:The government  is _______ (呼吁) to the public for information about the crime.
小题5:No ______ (随意地) dressed man is allowed to enter the room.
小题6:When you meet with a new word while reading, you may c________ the dictionary.
小题7:Jenny’s parents used to disagree with her marriage, but now they have a_________ of it.
小题8:David knows a lot about African history, that is, he is a s___________ in it.
小题9: I don’t think $500 will cover the e___________ of travelling across China.
小题10:When asked what led to his success, the actor o_______ his achievement to his wife’s support.