Modern science has given clear evidence ______ smoking can lead to many diseases.

The days are gone ________ physical strength was all you needed to make a living.

Last week, only two people came to look at the house, __________ wanted to buy it.
A none of them  B both of them C none of whom D neither of whom

The reason ___ he can’t come is ______ he has to work late.

I remember early spring mornings in the countryside ________ my grandmother would tell me to sit quietly and then read me books.

Julie was good at German, French and Russian, all of ____ she spoke fluently.
　　A who           B whom         C which          D that

Between the two parts of the concert is an interval, ___the audience can buy ice-cream.

Della turned all of her pockets inside out only to find $ 1.87 ___buy Jim a present for Christmas

It was reported that as many as 50% of patients do not take medicine ______ directed, ______ has drawn doctor’s attention.

After graduating from college, I took some time off to go travelling, ________turned out to be a wise decision.