It was when Asimov was eleven years old ________ his talent ________ writing became obvious.
| A．when; for | B．that; on | C．that; for | D．/; on |
Deaf people talk ________.
| A．with signs | B．with sign language | C．by signs | D．by speaking sign language |
A dark cloud is a _______of rain.
| A．sign | B．signing | C．mark | D．signature |
Since advertising can increase sales of production, _____it can _____the price.
| A．so; reduced | B．so; reduce | C．/; be reduced | D．/ ; reduce |
– What are you advertising ______?
---________. I need a place to stay at.
| A．for; The house | B．to; A house |
| C．for; A flat | D．to; A room |
– Do you have any idea which to choose?
--- Well, you’d better take this one. It’s ______in price and good in quality.
| A．lower | B．cheaper | C．high | D．higher |