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1. Peter __________________ the science museum twice this semester for his project.
2. __________________ those explorers ever _______________ overnight in the rainforest?
3. Sarah __________________ any concerts of that singer yet although she’s a big fan of him.
4. We __________________ just _______________ in an online course in computer programming.
5. How many summer courses __________________ you _______________ so far?
6. She’s nervous as she __________________ never _______________ bungee jumping before.
7. How long __________________ you _______________ as a volunteer for the WWF?
8. The team is discouraged because they __________________ any competitions yet.
9. Mrs Molly __________________ already _______________ to five different countries in the past 2 years.
10. My brother __________________ a class monitor for three years in a row.