British and American English教案1
23. we have sometimes accidents on this line, but no accidents ______ since last winter.
a occur b. have occurred c. have been occurring d. are occurring
24. he _____ on this essay for twenty minutes but he _____ only a hundred words.
a. has been working/has written b. is working/writes
c. has worked/has been writing d. works/is writing
25. elections _______ every four years and congress meets once a year.
a. are taken place b. are to be taken place c. took place d. take place
26. ______ careless, or you will make mistakes.
a. be not b. not be c. don’t d. don’t be
27. the no.8 bus ______ to chengdu college of geology, and not to sichuan university.
a. are gone b. is being gone c. goes d. are going
28. oil, exported from iran to europe, _____ by tankers.
a. used to be transported/have been built up
b. used to being transported/have built up
c. was used to be transported/had been built up
d. was used to being transported/will be built up
29. if it ______,the match will be postponed.
a. has been rained b. does rain c. rains d. is rained
30. as soon as i ______ the tools, i shall begin with the work.
a. have b. am having c. have been having d. have been had
小結summary 要注重語法在語言環境中的應用。
反思self-examination__________________________________________________