____is one of the four great inventions of ancient China.
| A．Paper-making | B．The train |
| C．The computer | D．The car |
Nobody will help you________ you help yourself.
A. unless B. because C. though
Once you put your school things___________, you'll find them easily.
A. in danger B.in order C. in detail
--Do you know Lin Shuhao?
-Yes. He is one ofbasketball players in the NBA.
A. popular B. more popular C. the most popular
The sun is shining . You'd better wear sunglasses while you are out.
A. brightly B. lightly C. heavily
They wonder________robots will make humans lose their jobs or not
A. that B. if C. whether