A. have begun. B. began. C. begin. D. would begin.
A. teach B. had taught C. have taught D. taught
A. wins B. won C. has won D. had won
A. were B. will be C. have been D. had been
A. were you;have got stuck B. have you been; have got stuck C. were you;got stuck D. have you been; got stuck
A. are reading B. read C. have read D. had read
A. marked B. has marked C. had marked D. was marking
A. lived B. had lived C. have lived D. was living
A. stops B. stopped C. has stopped D. had stopped
A. saw B. had been C. have seen D. would see
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