用所给单词的适当形式填空。1. My sister ____________ (buy) presents for me last week.
2. I ____________ (do) my homework now.
3. He often ____________ (play) football with his classmates.
4. There are many ____________ (strawberry) there.
5. I ____________ (sing) and ____________ (dance) with my new friends last night.
6. Let's ____________ (climb) mountains.
7. Mike and Sarah ____________(be) in Class 1.
8. Did they ____________(go) skiing?1. bought 2. am doing 3. plays 4. strawberries 5. sang, danced 6. climb 7. are 8. go