1. is/isn't working/is planting

 - Vì ô trống thứ nhất từ cần chia là "be", mà "Hoa's brother" là chủ ngữ số ít `->` is

 - Có "at the moment" là dấu hiệu thì hiện tại tiếp diễn 

2. plays/ đon't/play (chỉ sự thường xuyên)

3. Are/cooking/are cooking

 - Có "now" là dấu hiệu thì hiện tại tiếp diễn

4. is climbing/is

5. are/doing/are making/ to make (with)/am

 - Có "at the moment" là dấu hiệu thì hiện tại tiếp diễn

 - would like+to-V: thích làm gì đó theo kiểu nói lịch sự.

1.Hoa’s brother (be) is an engineer but he (not work) isn't working at the moment, he (plant) is planting some trees in his garden.

2. Lan usually (play) plays volleyball every Sunday but I (not) don't play it. I (play) play badminton.

3Are They (cook) cooking dinner in the kitchen now? - Yes, they (cook) are cooking a big meal for their daughter’s birthday tonight.

4. Look! Someone (climb) is climbing up the tree. It (be) is very dangerous.

5. What are you (do) doing at present? - Oh, we (make) are making some paper planes. Would you like (make to make them? - I’m sorry. I (be) am very busy.