Bài 11: Put these words into the correct order to make sentences.

1. I've been cleaning these dirty floors all morning.

2. Sarah has been working in this office for three weeks.

3. How long have we been waiting for this bus to come?

4. We've been reading this document for an hour and I don't understand anything.

5. they haven't been learning French for very long.

6. Martin has been living with his sister for a few weeks.

7. What have you been doing these last five years?

8. Why do you know I've been cleaning all these glasses?

Bài 12: Put the verbs into either the Present Perfect or Present Perfect Continuous.

1. have been working

2. has taught

3. has been teaching

4. has been studying

5. has learned

6. have read

7. has drunk

8. have you been playing

9. have you played