26. ______ it with me and I’ll see what I can do.　　　　　　　 (leave)

Leave

25. My dictionary ______. I have looked for it everywhere but still ______it.

is missing; haven’t found　　　　　　　　　　　　　　　 (miss，find)

24. You won’t know whether the coat fits you until you ______ it on. 　　(try)

have tried

23. I decided to go to the library as soon as I ______ what I was doing.　 (finish)

finished　　　　　　　　　　　　　　　　　　　　　　　　

22. When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.　 (come)

comes　

21. She ______no sooner　　 　to the office than she got down to writing the report.

had，got　　　　　　　　　　　　　　　　　　　　　　　　　 (get)

20. He ______ articles for our wall-newspaper these three years, and he ______ about forty articles.　　　　　　　　　　　　　　　　　　　　　 (write，write)

has been writing; has written

19. --- Look at the black clouds. It ______ soon.

　--- Sure. If only we ______ out.　　　　　　　　　　　 (rain，not come)

is going to rain; hadn’t come

18. --- ______ you 　　　Betty this morning?

--- Not yet, but she is sure to be here before noon.　　　　　　 (see)

Have, seen

17. Jim talked for about half an hour yesterday. Never ___ 　I __ _ him talk so much.

had，heard　　　　　　　　　　　　　　　　　　　　　　　 (hear)