1, This is the first time I have heard about the tram system in Hanoi (never)
\(\rightarrow\) ................................................
2, Firefighters spent two hours releasing the driver from the wreckage (it)
\(\rightarrow\) ...................................................
3, They took the predifent for to the hospital an emergency operation ( was )
\(\rightarrow\)....................................................
4, I had saved my document before the computer crashed (after)
\(\rightarrow\).......................................................
1, This is the first time I have heard about the tram system in Hanoi (never)
→ ...I have never heard about the tram system in Hanoi before....
2, Firefighters spent two hours releasing the driver from the wreckage (it)
→ ......It takes firefighters 2 hours to releasing the driver from the wrreckage .........
3, They took the predifent for to the hospital an ( was )
→....The president was taken to the hospital an emergency operation.....
4, I had saved my document before (after)
→........After the computer crashed I had saved my document...
Đúng thì tick nha!!!1
