They like traveling every year.
1 Do they like traveling every year?
2 What do they do every year?
3 Do they like traveling or shopping?
4 They like traveling every year, don't they?
They like traveling every year.
1 Do they like traveling every year?
2 What do they do every year?
3 Do they like traveling or shopping?
4 They like traveling every year, don't they?