根据句意，用括号内所给动词的适当形式填空。（必要时加助动词或情态动词）
小题1:Peter , we need to clean the house. Could you please ____________( sweep ) the floor?
小题2:_______________( not smoke ) here, Rick. Smoking is not allowed in public places.
小题3:—What do you think of the milk?
—Oh, it _______________( taste ) good.
小题4:Please say “I’m here ” when your name _______________(call ).
小题5:When I got home yesterday afternoon , it ________________ (rain ) hard .
小题6:I have finished my homework , Mom . May I stop ______________ ( have ) a rest?
小题7:Would you mind turning down the music? I ____________ ( write) a report now.
小题8:—Shall I tell Tom the good news?
—No, you needn’t. I ____________ ( tell ) him already.
小题9:Mo Yan is the first man ____________( win ) the Nobel Price for literature of the Chinese.
小题10:If you ____________ (not be ) careful enough in the exam, you will not get a good grade.
转化为
，最佳试剂是