19 mother .............(help) us now.
20 We............(do) our homework now.
21 Look ! the cat ..........(climb ) up the tree!
22 The baby......(sleep) now.
23 Look! the dog .........(run) after Tom.
24 He..........(listen) to music now.
25 Listen! They ..........(sing) now.
26 The dolphins ......(chase) after the balls at the moment.
27 Father and mother .........(write) a letter at present.
28 Tom is upstairs in the bathroom.He ........(wash) his hair.
cho dạng đúng của động từ trong ngoặc ở thì hiện tại đơn,thì hiện tại tiếp diễn
ai đung tui cho thanks
19 : are helping
20 : are doing
21 : is climbing
22 : is sleeping
23 : is running
24 : is listening
25 : are singing
26 : are chasing
27 : are writing
28 : is washing