There________great changes in our hometown in twenty years．
A．are
B．were
C．will be
D．will have
—Do you know________tomorrow?
—David?Never!He hates outdoor activities．
A．whether David will go cycling with us
B．when will David go cycling with us
C．that David would go cycling with us
D．who David would go cycling with
—Your T-shirt is so cool．Could you tell me________?
—I bought it at the department store．
A．where you buy it
B．where do you buy it
C．where you bought it
D．where did you buy it
Mr．Smith，a famous scientist，________that park next Thursday．
A．visits
B．visited
C．will visit
D．was visiting
Mark works hard now，and he does his work________than before．
A．more careful
B．more carefully
C．most careful
D．carefully
We all want to know who can________the physics problem?You know，it’s very difficult．
A．work out
B．take out
C．set out
D．look out
