The problem is _________ we can finish the work in time.
You can’t imagine ______ when I received your letter.
The country life _____ he had been used to ______ greatly last year.
----I’d like to have a table for six. ----Sorry, sir, but we don’t have any table _____ right now.
I have made ______ clear _______ I have nothing to do with the accident.
I ______ in Paris for many years, but I have never regretted my final decision to move back to China.