___________ study in No.4 Middle School?A. Did you used toB. Did you use toC. Do you used to
This song reminds me ______an experience I once had in the countryside.
It used to be very quiet and ______ ever happened around here.
He hurried back home _________ his schoolbag.
When he saw a wallet on the ground, he ________at once.
The train was late, ______ we had to wait for half an hour.