___I brush my teeth every day?
Yes .You must brush your teeth twice a day.
A CAN
B COULD
C MAY
D MUST
应该选?b?
___I brush my teeth every day?
Yes .You must brush your teeth twice a day.
A CAN
B COULD
C MAY
D MUST
应该选?b?
是的。 意思是我应该每天刷牙吗?
是的。你应该一天刷两次牙。