—Do you know the boy _______ is talking to Mr. Smith?
—Yes, he's my brother.
A. what B. which C. Who
Behind bad luck comes good luck. So something good happened _____ you..
| A．in | B．to | C．for | D．with |
She looks very sad. I want to help her , but I just don’t know_________ to do.
| A．what | B．when | C．how | D．where |
At last our head teacher ______ who broke the window of the classroom.
| A．looks for | B．finding | C．found | D．found out |
My mother was cooking while I_________ the radio.
| A．listened to | B．have listened to | C．was listening to | D．am listening to |
I decided to follow it to see _________.
| A．where it was going | B．where was it going |
| C．what was it going | D．what it was going |