1 . 根据句意，选择单词并以其适当形式填空。

1. They were _________ little children that they didn’t know what to do.
2. The mountain is _________ high that I cannot climb to its top.
3. It is _________ heavy a suitcase that none of us can lift it up.
4. See that big stone? Actually, it’s _________ a big stone that no one can carry it.
5. It was _________ nice weather that we were able to have lunch in the garden.

3 . 选词填空

allow for, back down, break new ground, dedicate one’s life to, die out, focus on, keep … from, keep on, by trial and error, think outside the box

1. He didn't turn up at the party. It was silly of us _________ waiting for him.
2. We need to come up with a really good advertising campaign. Let's try to   ________ caring for others.
3. Lin Qiaozhi has   ________ caring for babies.
4. Those who are drunk should   ________ driving.
5. The lecture will   ________ how to improve spoken English.
6. The scheme says nothing new; it doesn't   ________.
7. I will stick to working for my dream and I will not   ________ -
8. If we keep polluting the air, many of these animals and plants will   _________.
9. This way of developing new products   ________ makes the company unique from others.
10. We must   ________ getting stuck in a traffic jam, so we'd better start earlier.