—Sam, come downstairs, please. I need your help.
—Sorry，mum. I on the phone..
| A．am talking | B．talked |
| C．was talking | D．have talked |
I don’t know _____.
| A．what happened to him | B．what did he happen |
| C．what he happened | D．what was the matter |
While I was cleaning my room, my aunt ________.
| A．reached | B．got to | C．arrived | D．got out |
He lives _______, but he never feels __________.
| A．alone, lonely | B．lonely, alone | C．alone, alone | D．lonely, lonely |
____________hard work it is today!
| A．How | B．How a | C．What a | D．What |
---Whose notebook is this?
--- It ________ belong to Lucy. Look, her name is in it.
| A．must | B．can | C．can’t | D．need |