— When _________ you________ your teeth, Billy?
—Just now.
| A．do; brush | B．have; brushed |
| C．did; brush | D．was: brushing |
相关试题
--Lucy is doing her homework. ---Let’s ask Lily _______.
| A．but | B．except | C．instead | D．instead of |
The radio is too loud. Will you please _______ ?
| A．turn it down | B．turn it on | C．turn off it | D．turn it up |
---Will people live to be 300 years old? ---__________.
| A．No, they aren’t | B．No, they won’t |
| C．No, they don’t | D．No, they can’t |
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