6841 - Intermediate\Upper-Intermediate Test:8 - This is an opportunity that comes once in a lifetime. We _____ let it pass.

This is an opportunity that comes once in a lifetime. We _____ let it
pass.
don’t have to
shouldn’t have
mustn’t
needn’t have
Table of English Grammar Contents (All Levels)
Advanced Grammar Exercises
Upper-Intermediate Grammar Exercises
Intermediate Grammar Exercises