1. She is attending courses for studying the English language. pres cont
2. He
has just made a model aeroplane. pres perf
3. They are singing songs now. pres cont
4. She was playing
the piano all the evening yesterday. past cont
5. He has presented his collection to
the museum. pres perf
6. My friend bought this rare book at the jumble-sale. past simp
7. The
unique collection of ancient books was presented to him by his father. past simp
8.
The books were found by the collectors in rare-book shops. past simp
9. Books on a
particular subject were included in subject collections. past simp
10. Some books
are translated into different languages. pres simp