13． A． business           B． weakness    C． happiness             D． sadness

12． A． forgot             B． decided     C． failed                D． refused

11． A． angry              B． relaxed       C． stressed            D． proud

9． ―John sings so well．Has he ever been trained?

―No． He learns all by himself． He___________ goes to any training class．

A． usually           B． often               C． never              D． even

8． ―The light in his room is still on．Do you know____________?

―In order to prepare for the coming exam．

A． if he works hard                         B． why he stays up so late

C． why is he so busy                       D． when he will stop working

7． The teachers_________ the office for a few minutes when we arrived．We didn’t meet them．

A． had been away from                      B． had left

C． have been away from                    D． have left

6． Don’t discuss the problems with your partner unless you ____________ to do so．

A． ask               B． are asked          C． will ask           D． will be asked

5． The music in the supermarket sounded so­­____________ that I wanted to leave at once．

A． soft                B． wonderful         C． friendly           D． noisy

4． ―Mark speaks English well, but you ____________ him．   

―Thank you．

A．speak as badly as                       B．speak worse than

C．don’t speak so badly as              D．speak much better than