Spot the mistake! Cross out the incorrect sentence, a or b.

1​a) They usually have dinner at home.
​b) They have usually dinner at home.
2​a) Where did you go on Friday?
​b) Where you go on Friday?
3​a) We go to the gym in Wednesday afternoon.
b) We go to the gym on Wednesday afternoon.
4​a) I moved here the last year.
b) I moved here last year.
5​a) She like dolphins.
b) She likes dolphins.