When we credit the successful people with intelligence, physical strength or good luck we are making excuses for ourselves because we fall () in all three.

单项选择题When you're driving on a motorway, you must obey the signs telling you to get into the right ().

A．way
B．track
C．road
D．lane

单项选择题I should be able to finish the task on time, () you provide me with the necessary guidance.

A．in case
B．provided that
C．or else
D．as if