We must work hard and make _______ continuous progress so that we can make _______great contribution to our country in the future.
It was hard for him to fit in a new class, in which ______ he was familiar with.
We all think that the plan you come up with ____________ the work is very practical.
They can find whatever they need in the supermarket, ______ is always busy on Sundays.
Beyond the lake _____ quantities of birds coming from the North every winter.
Referring to reading, we must have the patience to read ______ book so that we will have _______ deep understanding of it.