John failed.... .
A.because he did not study hard
B.since he stopped to study hard
C.due to study hard
D.because of he did not study hard

I ordered two pizzas as we were all hungry.
A.when
B.while
C.because
D.soon

The conference had to be cancelled.... a key piece of equipment was out of work.
A.since
B.because
C.as the fact
D.due to the fact that

The expedition had to be postponed because there was a typhoon,
A.so as to
B.with a view to
C.as long as
D.on account of the fact that

No sooner had Daisy registered for the course than she received the scholarship.
A.Daisy registered for the course after receiving the scholarship.
B.Rather than receiving the scholarship, Daisy registered for the course.
C.As soon as Daisy registered for the course, she received the scholarship.
D.Registering for the course helped Daisy receive the scholarship.

The government does not know what to do with household rubbish in large cities.
A.Little does the government know what to do with household rubbish in large cities.
B.It is unknown what to do with household rubbish in large cities by the government.
C.Rarely the government knows what to do with household rubbish in large cities.
D.Hardly any government knows what to do with household rubbish in large cities.

My grandfather passed away.... .
A.as soon as I would be born
B.since I had been born
C.while I was born
D.before I was born

We will have prepared everything.... .
A.as soon as the meeting will begin
B.by the time the meeting begins
C.as long as the meeting would begin
D.after the meeting began

.... , she often wears in red.
A.After I have met her
B.Whenever I meet her
C.By the time I meet her
D.Until I will meet her

They delayed going on holiday until they had finished the project.
A.It was not until they had finished the project did they go on holiday.
B.They didn’t go on holiday after they had finished the project.
C.Only after they had finished the project did they go on holiday.
D.After having finished the project, they delayed going on a holiday.