--I want to know when Mr. Brown will arrive.--When he , I will tell you. A. will arrive B. arrived C. arrives
Why didn’t you go to the party last night? – I __________.
I find it difficult _______ up Mount Tai.
When people want to relax themselves, they prefer _________ TV rather than _______ newspapers.
Albert Einstein was _______a great scientist.
We were all _______with the _______trip to Dalian.