目前我国对外贸经营实行自由经营制度。()
Onewaytounderstandthousandsofnewwordsistogain__________goodknowledgeofbasicwordformation.
Ifyougotoseethefilm“HarryPotterifwe_________aholidaytomorrow.”
We_________thelessons_________oflastmonth.
TheGreatWallinChinaisoneofthefew_____objectsontheearth_____fromthemoon.
