1.【2013届苏锡常镇四市高三教学情况调研（一）】29. We _________ for the spring outing last week had it not been for the heavy fog.
A. would go B. could go C. could have gone D. must have gone
2.【2013届苏锡常镇四市高三教学情况调研（一）】33. 一How are we going to the railway station?
—By bus! Attempting to call a taxi in our city, especially during rush hour, ______ be an exercise in frustration.
A. should B. used to C. can D. has to
