It was necessary that the homework_____ in before the deadline.
A. must be handed
B. be handed
C. were handed
D. would be handed
He did his work carefully for fear that he.
A. made a mistake
B. makes a mistake
C. make a mistake
D. would make a mistake
The stubborn young boy did not follow the advice that hehis homework on time.
A. finish
B. had finished
C. would finish
D. must finish
If you had written clearly, you .
A. would be understood
B. could be understood
C. would have been understood
D. would have understood