在商品和服务市场上，“顾客是上帝”成为许多经营者的理念。对此你认为正确的是（ ）
| A．“顾客是上帝”就是顾客的人格比经营者的人格高尚，经营者应尊重顾客 |
| B．“顾客是上帝”是说顾客在市场上具有决定权，经营者只能听顾客的 |
| C．“顾客是上帝”是说经营者不能违背顾客的意愿，顾客怎么说都是对的 |
| D．“顾客是上帝”体现的是对顾客的礼遇，经营者与顾客在人格上是平等的 |
I find it hard ____ to drive a car.
A. to learn B. learning C. Learns
How long ____ his grandfather ____ ?
A. has, been dead
B. has, died
C. did, die
We’d better ____ out .It’s going to rain.
A. not to go B. don’t go C. not go
Shanghai is a beautiful city. I _____ there twice .
A. went B. have gone C. have been
He used ___ in the morning , but now he gets used _____ after supper.
A to study, studying
B. to study, to studying
C. to studying , to study