This is the first time I have visited Phong Nha Cave .
→ I have .............................................................................................................
This is the first time She has eaten this food
→She has.............................................................................................................
3. This is the first time they played the guitar.
→ They have.............................................................................................................
4. Tuan has never gone to the park before.
→ This is .............................................................................................................
5. He has never read this story before.
→ This is .............................................................................................................
6. Hoa has never sent me a letter before
→This is.............................................................................................................
1 ... never visited Phong Nha cave before
2 ....never eaten this food before
3 ...never played the guitar before
4 ... the first time Tuan has gone to the park
5 ....the first time he has read this story
6....the first time Hoa has sent me a letter
