The way you thought of _______ the experiment is very practical.
That evening, _____ I will tell you more about later, I ended up working very late.
According to some students, ______ listening practice is still ______ must in Senior 3, because it helps promote the sense of language.
. Can you tell me the way you think of________ the problem?
It's not necessary to explain the truth _____ there is spring wind, there is green grass.
Mother asked the youngest kid _____________ with his toy car.