Ms Lin ischidren .She can look after them and play with them well

Jim is eight-year-old boy. He spends half _____hour playing _____ piano every day.

Excuse me, Mr Li, I don’t know the meaning of the whole sentence. What shall I do?You should _____ .

_________is very interesting to swim in the river in summer, but it’s dangerous.

I will never forget the days __we spent together in Hangzhou last year.