[ Grammar ]
when our headmaster _______ the door,he _____ a snake is behind the door
A. opened,saw
B. open,saw
C. opening,saw
D. has opened,see

Random Topics:
Pre-intermediateAdverbs of How Something is DoneNoun ClauseHas Got & Have GotCan/CouldSynonym and AntonymSubject Verb Agreement and Verb TensesWish SentencesTenses and QuestionsSpeech TensesOther quiz:
Comparisons › ViewFor each group, choose the correct sentence.
A. Air pollution in cities is more worse than in the countryside.
B. Air pollution in cities is worse than in the countryside.
Grammar › View
Reading books is …………………… watching TV.
A. the most interestinger
B. more interesting than
C. interestinger
D. more interesting
Grammar › ViewIf I had more time, I ________ do more exercise
A. want to
B. would
C. will
Grammar › View
At what age did you learn _____?
A. to drive
B. driving
