Choose the letter A, B, C, or D to indicate the sentence which is the most correct.

We/enjoy/great/tribal dance show/when/visited/Da Lat.

Mai last time travelled to Europe two years ago.

It has been two years since Mai last travelled to Europe.

Mai haven't travelled to Europe for two years.

Mai began travelling to Europe two years ago.

I join the school English club, and work as a tutor of English.

I joined the school English club, and work as a tutor of English.

I joined the school English club, and worked as a tutor of English.

I join the school English club, and worked as a tutor of English.

I tutored some primary school students for a semester.

I tutor some primary school students for a semester.

I have tutored some primary school students for a semester.

I tutoring some primary school students for a semester.

At first, they can’t speak or write a full simple sentence.

At first, they couldn’t speak or write a full simple sentence.

At first, they don’t speak or write a full simple sentence.

At first, they didn’t can speak or write a full simple sentence.

That was the last time I went bird-watching.

This is the first time I have gone bird-watching.

That was the first time I went bird-watching.

This is the first time I went bird-watching.

I asked them to revise every unit of their textbook.

I asked them revise every unit of their textbook.

I ask them to revise every unit of their textbook.

I asked them revising every unit of their textbook.

Her little son has never tried Indian food before.

Her little son started to try Indian food when he was little.

Her little son first tried Indian food when he was little.

Her little son has tried Indian food since he was little.