30. Look ! the bus (come)..
31. John and Peter (read)book in the library now.
32.Tim and Jack (do)..their homework at the moment.
33. Nam (ride).hís bike to school now.
34. They (play) ..soccer in the yard at the moment.
35. We (sit).in the living-room at present.
38.Minh (go)..fishing now
39.Mr Tan (play)..the piano now.
40. Ha and Hanh (Play) ..badminton now.
2.are reading
3.are doing
4.is riding
5. are playing
6.are sitting
7.is going
8.is playing
9.are playing
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Cấu trúc của thì HTTD
(+)S+to be+V-ing+O
(-)S+to be+not+V-ing+O
(?)To be+S+V-ing+O?
->Đối với He/she/it/danh từ số ít+is
->Đối với I/they/we/danh từ số nhiều+are
DHNB:Now,at the moment,at present,now,……………….