I don’t remember how many years ago _____ I was taken to Beijing for the first time.

My brother_____ many toys when he was a little child.[ ]

How do you look after your goldfish?—They need clean water, and remember not to _____ with your hands.

What did you do _______ your last school trip? [ ]

What do you think of the new bridge? —I have never seen _____ before.