21 / What is he doing now? ( Hiện tại tiếp diễn : dấu hiệu now)
He is watering flowers in his garden.
22/ At the moment , my sisters playing volleyball and my brother playing soccer
( Hiện tại tiếp diễn : dấu hiệu at the moment)
23/In the summer, I usually (go)goes to park with my friends and in the spring , we (have ) ___had______Tet Holiday, I _am_______happy because I always (visit) __visits______my grandparents.
( hiện tại đơn ; dấu hiệu : usually, always)
24._____Does_______your father often (go)__goes___________to work by bus ?( hiện tại đơn : ofter)
25.What time __did_____they (get up)___get up_________ yesterday?( quá khứ đơn : yesterday)
( chúc bạn học tốt)