— When _________ you________ your teeth, Billy?
—Just now.
| A．do; brush | B．have; brushed |
| C．did; brush | D．was: brushing |
—Daniel, I am still not sure .
—Why not? No one is better than you in our class.
| A．how I can prepare for the competition |
| B．where I can go to apply for the competition |
| C．whether I should take part in the competition or not |
| D．who I can ask for more information about the competition |
—Wow, I have never thought about travelling abroad alone.
—.
| A．Me neither | B．I think so |
| C．So have I | D．Neither do I |
We set World Reading Day ________ teens to form a good reading habit.
| A．to encourage | B．encouraging |
| C． encouraged | D．encourage |
A number of countries have shown great in the new bank set up mainly by China.
| A．hobby | B．habit | C．interest | D．notice |
To live on Mars, you need to wear boots which ________ to prevent you from floating off into space.
| A．design | B．designed |
| C．are designing | D．are designed |