Present perfect.

7. She ____________________ blood twenty times so far. (donate)

6. We ____________________ to Ha Noi several times, but last summer we ____________________ there by train

2. My brother and I ____________________ (see) a white tiger already.

Have you _________ traveled to Singapore? - No, I've never traveled to Singapore.

5. How many novels ____________________ Charles Dickens ____________________ ? (write)

3. I ____________________ donate) blood twice, and ____________________ (give) presents to sick children in the hospital recently.

8. He ____________________ lectures to foreign tourists about traditional food and games recently.

I've __________ tried Indian food. I'll try it when I have chance (ever / never / just)

Do you want to eat breakfast with me? - No, I have _____________ had it.

10. “Have you ever ____________________ to Sa Pa?” (be)