1. the secretary and treasurer-------- to resign
A: plan B: plans
C: have planned D: were planned
2: most of the money-------- contributed by the children in the elementary school.
A: were spent B: have spent
C: are spent D: was spent
3: Neither the heat of the summer nor the winter winds--------- the dedicated runner.
A: stop B: stops
C: were stopped D: have stopped
4: A letter, accompanied with many mistakes, -------- make a good impression.
A: don't B: haven't C: doesn't D: aren't ​