— I find it difficult to learn Physics well.
— That’s true. Nobody can learn it well _______ he works hard at it.
A. if B. because C. unless
The twins look so ______ that I can’t tell one from the other.
A. similar B. fantastic C. expensive
Jerry won first prize in the speech competition. His parents are proud of his______.
A. accident B. success C. wise
The __________ of the sofa is high， we don’t have enough money to buy it.
A. size B. weight C. price
If you don’t finish your homework， I’m afraid your mother will ________ you.
A. attack B. punish C. celebrate
— Can I trust him?
— Yes， of course. He is always an honest man.
A. accept B. attract C. believe
