--- I think we have met the word before. --- Yes. It is in the reading material ____ we ____ reading yesterday.
In recent years, with the help of our teacher, I have made_____ rapid progress in ____math.
Several weeks had gone by _______ we realized the painting was missing.
_______ we realized the painting was missing.
Although _______ of danger, tourists can't help taking photos near the cliff.
_______
Many websites have been _______ to help people study foreign languages.
---Can I join the club, Dad? ---You can when you ______ a bit old.