Choose the correct answer to fill in the blanks.
It is hoped that all present-day communicable diseases will be conquered. However, ________ about certain diseases is still not sufficient to prevent them from spreading easily among the population.
A.what we know
B.what do we know
C.what we know that
D.that we know what

A.comfortable
B.necessary
C.community
D.memorable

A.ordinary
B.emphasis
C.decompose
D.calendar

A.object
B.victim
C.panic
D.trauma

Without skilful surgery he would not have survived the operation.
A.With skilful surgery. he would have survived the operation.
B.Had it not been for skilful surgery, he would have survived the operation.
C.But for skilful surgery, he would not have survived the operation.
D.He wouldn’t have survived the operation if he hadn't skilful surgery.

They would have never accepted his money if they had known his plan.
A.They knew what he wanted to do, so they refused his money.
B.They agreed with his wishes because they were glad to have his money.
C.They took the money he offered them without realizing his purposes.
D.They didn‘t know his plan and never took the money from him.

“You should have finished the report by now," the boss said to his secretary.
A.The boss suggested his secretary should have finished the report on time.
B.The boss scolded his secretary for not finishing the report on time.
C.The boss reminded his secretary of finishing the report on time.
D.The boss advised his secretary to finish the report on time.

I was on the point of leaving the house when he came.
A.No sooner had I left the house than he came.
B.l had hardly left the house when he came.
C.When he came I had just left the house.
D.I was just about to leave the house when he came.

I'm like my mum, whereas my brother looks like my dad.
A.I’m like my mum, whereas my brother takes after my dad.
B.I’m like my mum, whereas my brother takes over my dad.
C.I’m like my mum, whereas my brother takes on my dad.
D.I’m like my mum, whereas my brother takes in my dad.

I'm sure it wasn’t Mr. Phong you saw because he’s in Hanoi.
A.It couldn’t be Mr. Phong you saw because he’s in Hanoi.
B.You mustn’t have seen Mr. Phong because he’s in Hanoi.
C.It can’t have been Mr. Phong you saw because he’s in Hanoi.
D.Mr. Phong mightn’t see you because he’s in Hanoi.