I’m going to visit the factory ________ your brother worked a few years ago.
You have to know ________ you're going if you are to plan the best way of getting there.
It was so noisy that we hear ourselves speak. A. couldn’t B. shouldn’t C. mustn’t D needn’t
Have you ever heard of the trees that are homes animals both on land and sea?
Tom had to______ the invitation to the party last weekend because he was too busy.
Despite the previous rounds of talks, no agreement______ so far by the two sides.