Thousands of children said they were forced to practice the piano.
| A．to question | B．to be questioned | C．questioned | D．questioning |
A man does not know the difficulty of anything _____ he does it personally .
| A．although | B．if | C．because | D．unless |
---What was the party like ?
---Wonderful . It is years _____ I enjoyed myself so much .
| A．after | B．when | C．before | D．since |
We will take _____ wants to go there for a sight-seeing .
| A．whoever | B．who | C．anybody | D．all that |
I think the doctor is able to care of _____ is the matter with your son .
| A．all | B．what | C．whatever | D．anything |
_____ in thought , he almost ran into the car in front of him .
| A．Losing | B．Having lost | C．Lost | D．To |