(____) He is making a birthday card.
(____) He's in his room.
(____) When is Jack's birthday?
(____) Where's Jim?
(____) Who is he making it for?
(____) What is he doing?
(____) Tomorrow.
(____) He is making it for his friend，Jack.
读《但愿人长久》，按课文内容将诗句补充完整，再根据你的理解填空。
苏轼埋怨月亮是因为它在____的时候变得这么____、这么____ ；但他想到世上本来就是____、____，就像天上的月儿____、____一样，他祝愿____常留人们心间，这样虽然____，也能共同拥有____!
如图所示，每个滑轮的重为100N，不计摩擦与绳重，用此滑轮组将500 N的重物匀速提升 l m．在此过程中 ( )
