He expressed his hope _______ he would visit China again the next year, and this was the very hope ______ he expressed as soon as he arrived in the country.

We became good friends quickly, ______our life experiences couldn’t have been more different

I hear Mr. Zhang has gone to Beijing for ameeting. —Really Do you know when he______

Your bedroom is very dirty. Please________ at once.

Since Tom downloaded a virus into his computer, he can not open the file now[ ]