用所给词的适当形式填空.（10分）

小题1:He is very lazy.He _________his homework every day. ( not do )

小题2:Lucy _________ the piano when I went to see her last night. ( play )

小题3:Listen! Someone            (cry) in the next room.

小题4:He told me that the sun       (rise) in the east.

小题5:We’ll go to the beach if it            (not rain)tomorrow.

小题6:     ( not be ) late for school.

小题7:The short play             (write) by Lu Xun in 1932

小题8:My mother went out an hour ago.she            (be)back in half an hour.

小题9: you      (finish)your work? —— Not yet.

小题10:Li Ming       (read ) this book two days ago.

某工业生产场所，长60m、宽24m、灯具安装高10m，照度标准值200lx，维护系数0．6，显色性无要求，解答下列问题。

如选用金属卤化物灯400W，光通量φ=360001m，直接型工厂灯具，利用系数U=0．61时，设计光源及灯具为（）套。

A.16

B.18

C.20

D.22