While the doctor.... Mr. Jones, his son.... outside this morning.
A.was examining / was waiting
B.will be examining / are waiting
C.had been examining / was waiting
D.are examining / is going to wait

When the boss.... into the office, his secretary.... , and the accountant.... on the phones
A.was walking / has been typing / has been talking
B.had walked / was typing / had talked
C.walked / was typing / was talking
D.had been walking / had typed / talked

The guard.... to his iPod, so he.... the fire alarm.
A.had listened / was not hearing
B.was listening / did not hear
C.listened / had not heard
D.was listening / was not hearing

The Titanic.... the Atlantic when it.... an iceberg.
A.was crossing / struck
B.crossed / was striking
C.had crossed / was striking
D.crossed / had struck

He drank.... he had to suffer from cancer.
A.so much that
B.so much that
C.such much that
D.such many that

You should keep the milk in the refrigerator.... it does not go bad.
A. as
B.so
C.so as to
D.so that

I fixed it.... everybody could use it.
A.in order that
B.in order to
C.so as to
D.to

The teacher explained the lessons slowly.... .
A.to understand them clearly
B.so that his students could understand them clearly
C.in order to understand them clearly
D.so as his students understand them clearly

I will behave toward them.... I would like to be treated.
A.as
B.as though
C.as if
D.so as to

He.... there 5 years ago and.... back since.
A.went / has not been
B.have gone / will not be
C.was going / am not
D.had gone / was not