chia dạng đúng của động từ trong ngoặc ở thì hiện tại hoàn thành hoặc thì hiện tại hoàn thành tiếp diễn
1, jack(go)……..to Paris for a holiday.He never (be)…….there
2,You(sleep) so far? I(ring)…. the bell for the last twenty minutes
3,Mary( lose)…..her hat and she (look)…..it for until now
1, jack(go)…has gone…..to Paris for a holiday.He has never (be)…been…there.
2,have You(sleep)been ringing – so far? I(ring). have .been sleeping.. the bell for the last twenty minutes.
3,Mary (lose)has lost her hat and she (look) has been looking for it until now
1. Jack (go)..has gone..to Paris for a holiday. He has never (be)..been.. there.
2. Have you been (sleep) ..sleeping.. so far? I (ring) ..have been ringing.. the bell for the last twenty minutes.
3. Mary (lose) ..has lost..her hat and she (look) ..has been looking.. it for until now.