`1.` This is the first time I have visited to the museum. 

- This is the + first/second/... + time + S + have/has + VpII +...

`2.` It took us 5 hours getting to London. 

-  It takes/took (sb) + time + to V

`3.` I am going to have my piano tuned tomorrow.

- Thì TLG - DHNB: tomorrow

- have sth done

1. This is the first time I've visited the museum 

This is the + thứ tự + S + has/have + V3/ed

2. It took us 5 hours to take to London

It + take (chia nếu cần) + O + quãng thời gian + to V

3. I'm going to make someone turn my piano tomorrow 

make + O + V là nhờ / bảo ai đó làm gì

ĐÂY Ạ~~

XIN CÂU TRẢ LỜI HAY NHẤT NẾU ĐƯỢC Ạ~~