4. Put the verbs into the Present Perfect Simple, Present Perfect Continuous.

31. She has been working at the clothes shop since May. 32. I haven't been to the new electronics shop yet. 33. We have never attended a cookery course. 34. You have been packing all morning. 35. Have you already read this book? 36. Mary has been cooking dinner for 2 hours now! 37. Has he ever traveled around London? 38. They have bought a pet dog. It's cute! 39. They are wet. They have been walking in the rain. 40. How long have you been learning English?