词汇运用。(每小题1分，满分15分)
A)根据句意及汉语提示，拼写单词，使句子完整、正确。
小题1:These exchange students are from different            (国家).
小题2:My bike is       (损坏的), so I have to walk to school these days.
小题3:These volunteers can help people with all kinds of        (问题).
小题4:"Simon,     (检查) your homework carefully,” the mother says to the little boy.
小题5:----Who are you        (担心) about, Madam?  ----My little son. I can't find him now.
B)根据句意并用括号内所给，单词的适当形式填空，使句子完整、正确。
小题6:This is my__________(twenty) time to see the singer. He looks very cool.
小题7:Daniel is a kind and        (help) boy, and we all like him.
小题8:The little girl is always the first        (come) to school on weekdays.
小题9:Thanks for       (invite) us to visit your new house.
小题10:Our teacher says that one of the    (visit) will come to our school next week.
小题11:My father is a       (cook) in a big restraint in our town. He is good at cooking.
小题12:Why not ask a computer engineer        (fix) your computer？
小题13:We are really       (luck) to go to the Hong Kong Disneyland.
小题14:The song Two Butterflies(蝴蝶)         (sound) wonderful. I like it very much.
小题15:My new flat is really different from        (they).