Ⅰ. 单句语法填空
1. They traced(trace) out the shape of a large heart in the sand.
2. He got up late again. He might have stayed(stay)up last night.
3. Not only do the professors have their own ideas on the matter, but the students have (have)theirs too.
4. During this period many people came down with COVID-19.
5. I’m old enough to have(have) the freedom to do as I like.
6. Never get discouraged(discourage)easily no matter how difficult the situation may be.
7. They will take action to defend (defend) their country.
8. I was still sleeping when the fire broke out, and then it spread quickly.
