.Walter offered us a lift when he was leaving the office ,but our work__,we refused the offer.
It has been proved __________ eating vegetables in childhood helps to protect you against serious illnesses in later life.
The reason why he was sent to the hospital was __________ he was ill.
The speaker spoke of some writers and some books __________ were popular then.
I refuse to accept the blame for something __________ was someone else's fault.
There is clear evidence __________ the most difficult feeling of all to interpret is bodily pain.