--- Sam, do you know when Alice ______to my party ?
---I think she will come when she ______free .
| A．comes; is | B．comes ; will be | C．will come ; is | D．will come ; will be |
He could hum when he was only four years old.
| A．many music | B．many piece of music |
| C．a lot music | D．many pieces of music |
— did he play soccer?
— About 15 years.
| A．How often | B．How many | C．How long | D．How much |
Did they the English speaking competition?
| A．join | B．joined in | C．take part in | D．make part in |
I saw Mr Li into the school library just now.
| A．went | B．goes | C．going | D．go |
— When you to learn to skate?
— Five years ago.
| A．do; start | B．will; start |
| C．had; started | D．did; start |