Don’t leave the water ______when you brush your teeth.
A. run B. to run C. running D. being run
Follow your doctor’s advice, ______ your illness will get better.
A. then B. or C. and D. but
Planning ahead so far ______no sense—so many things will have changed by next year.
A. makes B. made
C. is making D. has made
As a matter of fact, scientists discovered no ______ of life in the Mars.
A. signal B. mark C. sign D. symbol
They put forward a lot of plans at the meeting, none of ______were carried out in their work.
A. which B. them C. that D. what
We ______the difficulty together, but why didn’t you call me?
A. should face B. might face
C. must have faced D. might have faced
