( ) I clean ________ bedroom on Sunday.
A. I B. your C. my
Lucy went a school trip .
| A．in | B．to | C．on | D．at |
It us thirty minutes to climb to the top .
| A．make | B．carried | C．took | D．made |
was in front of you last Monday ?
| A．Who | B．What | C．When | D．Where |
Chinese people invented paper for .
| A．we | B．us | C．our | D．I |
Nine children their grandparents last week .
| A．visits | B．visit | C．visiting | D．visited |