31.When you (come) what your friends (do)?
32. When Nam (go),we(sleep) well and what you(do)?
33.When I (see )you, who yoy (talk) to?
34. When you(build?0 this house?
35.At the moment she(do) her homework
36.He usually (do) her homework, (wash) clothes and(watch)TV in the evening
37.While Ba ( plant) trees, I (water) them
38.While I (read) book,she (sing)
39.While they (play) soccer, we (play) tennis
40.While Lam (write) an essay, my sister(write) letter
41. I (practise) speaking English while my brother (listen) to music
42. We(have) cakes while they(eat) sweets
43.She(wait) fore Tom while Tom (sleep) well
44.He (watch) TV while they (sing)
45.What you(do) while they (fight) your brother?
46.What she(do) while you(be) at school?
47. What they (do) while he (cut) the flowers?
48.While her husband ( cook), what she (do)?
49.While your teacher (explain) the lesson, what you(do)?
50.What you(do) between seven and eight last night?We (have) dinner