Mr Black， _______ will the parents' meeting last？
It's hard to say． Maybe one hour more．（ ）
A．how longB．how muchC．how farD．how often
The classroom ________ by the students every day．（ ）
A．cleanB．cleansC．is cleaned
Li Hua's shoes are as _______ as Zhang Hui's．（ ）
A．cheapB．cheaper
C．the cheapest
What did your PE teacher say about your high jump at the sports meeting？
He said that I _______ better．（ ）
A．could doB．have doneC．will do
The Smiths ______ many places of interest since two years ago．（ ）
A．visitB．have visited
C．visited
How _______ your school trip yesterday？great．（ ）
A．will beB．isC．was