过拥挤的街道时,请小心!
---- ----- when you ____ ____the busy street.
"R____"is another way of us saying "mend".
I have ___friends.They often come to see me
A.a quite few B.a few quite C.quite a few D.quite few
A woman saw it ___ when she was walking ___
A.happening ,past B.happen ,passed C.happen,past D.to happen,past