Before you start this task, you ________ realize its importance of doing it.
A. may B. can
C. ought to D. would
To save water, the parents told their children ________ their teeth under a running tap.
A. to brush B. not brushing
C. not to brush D. brushing
Mr. Lee spent the final time of his life in writing after finding out that he ________ soon.
A. would die B. will die
C. died D. has died
Father was very angry because his favorite glass ________ by his pet dog.
A. broke B. has broken
C. was broken D. has been broken
.The school meeting ________ once every two weeks in the concert hall.
A. is held B. was held
C. will be heldD. has been held
I didn’t know ________ the professor would give us a lecture in the hall.
A. where B. when C. whatD. why
