The bike hit the tree ______ I could get off.A when B before C until D while
________ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.
A good speaker is supposed to manage to ________ the listeners what he means.
We agreed to accept ________ they thought was the best professor in the college.
I don’t know who invented ________ telephone. It’s really ________ most useful invention.
----Whose advice do you think I should take? ----________.