...they ___ 23.I learnt German by myself .(对画线部分提问...
(What)(does) the robot help Mr Mott (to)(do)?22.They came to borrow some books .(对画线部分提问)(What)(did) they(do) 23.I learnt German by myself .(对画线部分提问)(How)(did) you(learn) German 24.She can dance ,(can't)(she)?(反意疑问句)25.Let us go to the zoo ,(...