Ⅲ. 用括号内所给单词的适当形式填空
【小题1】My hobby is singing. It can make me __________ （happily）.
【小题2】What can we do __________ （help）the poor girl?
【小题3】I have great trouble in __________ （learn）maths and I am so worried.
【小题4】His sister studies at a __________ （medicine）college now.
【小题5】Look！ An old man __________ （lie）on the ground. What happened to him?