He started to learn English in 1990 and in the years ________ he kept on using it in his work.
First of all, please _____ me to introduce myself to you.
This is the concert hall ________ he has given very successful performances.
I usually go shopping in that supermarket, because their prices are _____.
How much does the TV _____?
–Where is Li Ping? –He’s _____ the library.