By the end of last month, I _____ all the CDs of Justin Bieber.

There _____ an English speaking contest(演讲比赛) for middle school students in our city in early July.

The Smiths came to Shanghai in 2008,they ____ there for three years since then.

–When _______ your mother _______ you that blue dress, Lucy?
–Sorry, I really can’t remember. Maybe two or three weeks ago.
A. will; buy    B. does; buy       C. did; buy

My grandmother         a lot of changes in Tianjin since she came here.

Your donation_________ and the money will be used to help the students from poor families.

—Have you ever been to Hong Kong？
—Yes, I ＿＿＿ there last month.
A. went to   B. have been   C.  went

Echo _____ for half a month. She’ll come hack in two months.
A. left   B leave  C. has left    D. has been away

－What time will Diana get to Chengdu?
－I’m not sure. When he ________, I’ll call you.
A. will arrive     B. arrive      C. arrives  

－Where is John?
－He ______ the science lab.
A.  has gone to    B. has been to   C. went to